perplexus.info :: Sequences : Deja vu

Deja vu (Posted on 2020-05-25)

A sequence
142,725,631,254,665,682,354,316,...
is created according to a certain algorithm, for you to discover.

Following your findings, please:
1. Evaluate a₉
2. Find the smallest n for which a_n=a_n+1

No Solution Yet Submitted by Ady TZIDON

Rating: 5.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

Solution

| Comment 2 of 4 |

1^1=1

2^2=4

3^3=27

4^4=256

5^5=3125

6^6=46656

7^7=823543

8^8=16777216

9^9=387420489

10^10=10000000000

...

142, 725, 631, 254, 665, 682, 354, 316, 777, 216, 387, 420, 489, 100, 000, 000, ...

1. a9=777

2. a15=a16=000

Posted by Math Man on 2020-05-28 16:32:49

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