perplexus.info :: Sequences : OEIS in the NYT

OEIS in the NYT (Posted on 2023-05-28)

The Science Times section of the New York Times, Tuesday, May 23, 2023, had an article on Sloane's Online Encyclopedia of Integer Sequences. A sidebar had four sequences for the reader to identify. Here's your chance to do so; identify the next in sequence:

0, 1, 8, 11, 69, 88, 96, 101, ...
1, 11, 21, 1211, 111221, 312211, ...
5, 8, 12, 18, 24, 30, 36, 42, ...
14, 18, 23, 28, 34, 42, 50, ...

Of course it would be no fun looking up the answers in the OEIS (or the NYT).

Submitted by Charlie

Rating: 5.0000 (1 votes)

Solution: (Hide)

111; numbers that look the same rotated 180°
13112221; Each number describes the number before it. In this case it describes 312211 as having one 3, one 1, two 2's, and two 1's, of course using digits for the spelled out numbers here.
52; The sums of pairs of primes (overlapping pairs).
59; The numbered stops on the number 1 subway line in Manhattan.

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

Subject	Author	Date
Answers	Math Man	2023-06-03 19:21:04
forget about D	Steven Lord	2023-05-28 22:29:37
Part A	Brian Smith	2023-05-28 21:17:43
part c	xdog	2023-05-28 18:27:53
Part B solution	Kenny M	2023-05-28 10:07:44

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