Home > Numbers > Sequences
Sequence Trails (Posted on 2009-05-14) |
|
This myriad of numbers hides 7 pathways that each link a sequence of numbers.
aaa |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
a |
55 |
92 |
34 |
28 |
225 |
55 |
12 |
256 |
45 |
89 |
70 |
361 |
144 |
b |
55 |
169 |
47 |
89 |
196 |
233 |
53 |
225 |
66 |
144 |
256 |
233 |
289 |
c |
34 |
67 |
21 |
61 |
66 |
16 |
8 |
45 |
35 |
53 |
51 |
225 |
47 |
d |
53 |
276 |
13 |
59 |
21 |
253 |
15 |
13 |
231 |
169 |
28 |
196 |
2 |
e |
324 |
256 |
35 |
361 |
225 |
89 |
22 |
256 |
13 |
289 |
253 |
324 |
233 |
f |
128 |
22 |
35 |
64 |
71 |
32 |
253 |
28 |
210 |
15 |
64 |
351 |
325 |
g |
210 |
16 |
35 |
15 |
21 |
22 |
231 |
92 |
55 |
35 |
70 |
92 |
43 |
h |
47 |
12 |
43 |
2 |
2 |
4 |
4 |
45 |
4 |
28 |
45 |
51 |
70 |
i |
324 |
289 |
8 |
92 |
253 |
12 |
59 |
324 |
22 |
8 |
231 |
35 |
4 |
j |
61 |
59 |
16 |
61 |
67 |
233 |
71 |
153 |
120 |
22 |
210 |
117 |
12 |
k |
289 |
53 |
47 |
128 |
256 |
300 |
53 |
276 |
21 |
253 |
34 |
276 |
300 |
l |
351 |
8 |
325 |
91 |
4 |
300 |
8 |
66 |
91 |
233 |
66 |
276 |
325 |
m |
361 |
59 |
51 |
70 |
61 |
64 |
59 |
210 |
35 |
231 |
61 |
253 |
67 |
Each sequence is exactly a consecutive series of 7 numerals in length. The numerals are connected orthogonally, and usually in a perpendicular direction. The path connecting numerals within a sequence may not be intersected or crossed by itself or any other path, and numerals are unique to a particular sequence.
The sequences are:
Prime, Triangle, Square, Pentagonal, Hexagonal, Fibonnacci and Powers of 2, and obviously, do not expect every sequence to begin with its first term.
Hints:
1. Use your "prt sc" function to make a print-out of the page.
2. Determine the range of each sequence within the numeric range of the table.
3. Be aware that some full length sequences exist but would impinge on others.
Note: the three numbers bold and underlined are not part of a solution sequence but demonstrate how a Power of 2 trail might begin.
(At least) 3 solutions
|
| Comment 2 of 4 |
|
Solution 1: 55----------------------------------89---------144 | | | 169---------196 . . . . . . . | | | | 34------21 . | 16--8 . 35------51 . | | | | | | | | . . 13 . | | | . | . | . | | | | | | | . 256---------225 | | . | . | . 233 | | | | | . | . 64------32 | . | 15 | 351-325 | | | | | | | . | . | . . | . | | 70--92 | | | | | | | | . | 43 | 2-------4 . | 28--45 | | | | | | | | | 324-289 | | . 12----------22 . | | | | | | | | | | . | | 67------71 153-120 . | 117 | | | | | | | | | 53--47 128 | . . . | . | 276-300 | | | | | | | | . . | . . . 91------66 | . | | | | 361 59----------61 . . 210-----231-----253 .
Solution 2: 55----------------------------------89 . . . | | | 169---------196 . . . . 144-----233 . | | 34------21 . | 16--8 . 35------51 . . | | | | | | . . 13 . | | | . | . | . . | | | | | . 256---------225 | | . | . | . . | | | | | . | . 64------32 | . | 15 | 351-325 | | | | | | | . | . | . . | . | | 70--92 | | | | | | | | . | 43 | 2-------4 . | 28--45 | | | | | | | | | 324-289 | | . 12----------22 . | | | | | | | | | | . | | 67------71 153-120 . | 117 | | | | | | | | | 53--47 128 | . . . | . | 276-300 | | | | | | | | . . | . . . 91------66 | . | | | | 361 59----------61 . . 210-----231-----253 .
Solution 3: 55----------------------------------89 . . . | | | 169---------196 233-------------144 . . . | | 34------21 . | 16--8 . 35------51 . . | | | | | | . . 13 . | | | . | . | . . | | | | | . 256---------225 | | . | . | . . | | | | | . | . 64------32 | . | 15 | 351-325 | | | | | | | . | . | . . | . | | 70--92 | | | | | | | | . | 43 | 2-------4 . | 28--45 | | | | | | | | | 324-289 | | . 12----------22 . | | | | | | | | | | . | | 67------71 153-120 . | 117 | | | | | | | | | 53--47 128 | . . . | . | 276-300 | | | | | | | | . . | . . . 91------66 | . | | | | 361 59----------61 . . 210-----231-----253 .
Prime Numbers: 43, 47, 53, 59, 61, 67, 71
Triangular Numbers: 210, 231, 253, 276, 300, 325, 351
Square Numbers: 169, 196, 225, 256, 289, 324, 361
Pentagonal Numbers: 12, 22, 35, 51, 70, 92, 117
Hexagonal Numbers: 15, 28, 45, 66, 91, 120, 153
Fibonacci Numbers: 13, 21, 34, 55, 89, 144, 233
Powers of 2: 2, 4, 8, 16, 32, 64, 128Edited on May 14, 2009, 9:23 pm
|
Posted by Dej Mar
on 2009-05-14 21:09:48 |
|
|
Please log in:
Forums (0)
Newest Problems
Random Problem
FAQ |
About This Site
Site Statistics
New Comments (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On
Chatterbox:
|