perplexus.info :: Numbers : Next Numbers Please #9

Next Numbers Please #9 (Posted on 2017-08-23)

What are the next four numbers in the sequence 1, 2, 3, 4, 5, 3, 7, 4, 6, 5, 11, 4, __, __, __, __?

When does the number 12 first appear in the sequence?

Submitted by Brian Smith

Rating: 3.6667 (3 votes)

Solution: (Hide)

The next four numbers are 13, 7, 5, 8. These are the Kempner numbers. OEIS A002034

The number 12 first appears as the 243rd term. OEIS A046021

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

Subject	Author	Date
re(5): When 12 appears	Charlie	2017-08-29 09:54:43
re(4): When 12 appears	Charlie	2017-08-29 09:47:19
re(4): When 12 appears	Jer	2017-08-28 15:20:21
re(3): When 12 appears	Steve Herman	2017-08-27 19:21:04
re(2): When 12 appears	Jer	2017-08-27 18:19:58
re: When 12 appears	Steve Herman	2017-08-23 20:23:14
When 12 appears	Math Man	2017-08-23 19:18:24
NEXT 4	Ady TZIDON	2017-08-23 13:14:12
Part 2 answer only (spoiler)	Steve Herman	2017-08-23 11:43:39

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