A023397 In base 10, if any power of 2 ends with k 2's and 3's, they must be the first k terms of this sequence in reverse order.

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

Offset

1,1

Links

Ray Chandler, Table of n, a(n) for n = 1..10000

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 A276862

Adjacent sequences: A023394 A023395 A023396 * A023398 A023399 A023400

Keyword

nonn,base

Author

David W. Wilson

Status

approved