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

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Last modified October 20 22:44 EDT 2019. Contains 328291 sequences. (Running on oeis4.)