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A023397 In base 10, if any power of 2 ends with k 2's and 3's, they must be the first k elements of this sequence in reverse order. 3
2, 3, 2, 3, 2, 2, 2, 3, 2, 3, 2, 3, 3, 2, 3, 3, 3, 3, 3, 3, 2, 3, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 2, 3, 3, 2, 3, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 2, 3, 2, 2, 3, 2, 2, 3, 2, 2, 3, 2, 2, 2, 2, 3, 2, 2, 3, 2, 3, 3, 3, 2, 2, 3, 3, 3, 2, 3, 3, 3, 2, 2, 2, 2, 2, 3, 2, 2, 3, 3, 3, 2, 3, 2, 3, 3, 2, 3, 2, 3, 3, 2, 2, 2, 2, 2, 3, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..107.

EXAMPLE

No power of 2 ends with 3, so the first term is 2.

No power of 2 is == 22 mod 100, since 4 does not divide 22, so the next term is 3 (and 4 does divide 32).

No power of 2 is == 332 mod 1000, since 8 does not divide 332, so the next term is 2 (and 8 does divide 232). And so on.

CROSSREFS

Cf. A023410, A053316.

Sequence in context: A159580 A121549 A244228 * A258115 A296658 A175066

Adjacent sequences:  A023394 A023395 A023396 * A023398 A023399 A023400

KEYWORD

nonn,base

AUTHOR

David W. Wilson

STATUS

approved

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Last modified November 14 01:24 EST 2019. Contains 329108 sequences. (Running on oeis4.)