perplexus.info :: Sequences : What's Seven Got To Do With It?

What's Seven Got To Do With It? (Posted on 2018-05-14)

A simple algorithm generates the following sequence.

7, 115, 1411, 17141, 227721, 2757061, 35526761, ____?____

What number comes next?

Submitted by Larry

Rating: 3.0000 (1 votes)

Solution: (Hide)

When the numbers are converted from Base 8 to Base 10, they form the sequence:
7, 77, 777, 7777, etc.

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
computer extension	Charlie	2018-05-14 10:33:42
My lucky number (spoiler)	Steve Herman	2018-05-14 08:07:51

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