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A023396 If any odd power of 2 ends with k 1's and 2's, they must be the first k elements of this sequence in reverse order. 5
2, 1, 1, 2, 2, 1, 2, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 2, 1, 1, 2, 1, 2, 2, 2, 1, 1, 1, 1, 2, 2, 1, 2, 1, 1, 1, 2, 2, 2, 1, 2, 1, 1, 2, 2, 2, 1, 2, 2, 1, 1, 2, 1, 1, 1, 2, 1, 1, 2, 1, 2, 1, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 1, 2, 1, 2, 1, 2, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..108.

EXAMPLE

2^1 ends in 2

2^5 ends in 32

2^9 ends in 512

2^13 ends in 8192

2^89 ends in ...562112

CROSSREFS

Cf. A126933.

Sequence in context: A293433 A177025 A265210 * A091221 A106495 A100428

Adjacent sequences:  A023393 A023394 A023395 * A023397 A023398 A023399

KEYWORD

nonn

AUTHOR

David W. Wilson

EXTENSIONS

Definition corrected by Gerry Leversha (g.leversha(AT)btinternet.com), Mar 17 2007

STATUS

approved

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Last modified November 15 11:18 EST 2019. Contains 329144 sequences. (Running on oeis4.)