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Next Numbers Please #3 (Posted on 2004-06-01) Difficulty: 5 of 5
What are the next two numbers in this sequence?
1, 1, 7, 3, 23, 23, 111, 15, 351, 415, __, __

See The Solution Submitted by Brian Smith    
Rating: 3.9091 (11 votes)

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Solution I GOT IT!!! | Comment 26 of 30 |

Each number in the sequence is one bit longer than the previous one (leading 0's included).  All the numbers are left justified, rather than right justified.  The first column of bits alternates 101010..., the second column of bits (which starts on row 2) alternates 11001100..., the third columns of bits (which starts on row 3) alternates 111000111000...

000000000111111111122222222223...
123456789012345678901234567890


1 = 1
01 = 1
111 = 7
0011 = 3
10111 = 23
010111 = 23
1101111 = 111
00001111 = 15
101011111 = 351
0110011111 = 415
11100111111 = 1855
000100111111 = 319
1001001111111 = ...
01010001111111
111110011111111
0010100011111111
10101000111111111
010011000111111111
1100110001111111111
00010100001111111111
101101100011111111111
0111011000011111111111
11110110000111111111111
000000110000111111111111
.
.
.

Whew!  That one was fun!


  Posted by Erik O. on 2004-06-11 13:54:24
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