Search: id:A023396
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%I A023396
%S A023396 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,
%T A023396 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,
%U A023396 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
%N 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.
%e A023396 2^1 ends in 2
%e A023396 2^5 ends in 32
%e A023396 2^9 ends in 512
%e A023396 2^13 ends in 8192
%e A023396 2^89 ends in ...562112
%Y A023396 Cf. A126933.
%Y A023396 Sequence in context: A006345 A122497 A154402 this_sequence A091221 A106495 
               A100428
%Y A023396 Adjacent sequences: A023393 A023394 A023395 this_sequence A023397 A023398 
               A023399
%K A023396 nonn
%O A023396 1,1
%A A023396 David W. Wilson (davidwwilson(AT)comcast.net)
%E A023396 Definition corrected by Gerry Leversha (g.leversha(AT)btinternet.com), 
               Mar 17 2007

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