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Search: id:A043884
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A043884 Numbers n such that 1 and 3 occur juxtaposed in the base 4 representation of n but not of n+1. +0
1
7, 13, 23, 31, 39, 45, 55, 61, 71, 77, 87, 95, 103, 109, 127, 135, 141, 151, 159, 167, 173, 183, 189, 199, 205, 223, 231, 237, 247, 253, 263, 269, 279, 287, 295, 301, 311, 317, 327, 333, 343, 351, 359, 365, 383, 391, 397, 407, 415 (list; graph; listen)
OFFSET

1,1

CROSSREFS

Sequence in context: A106349 A048449 A147812 this_sequence A129727 A075642 A032690

Adjacent sequences: A043881 A043882 A043883 this_sequence A043885 A043886 A043887

KEYWORD

nonn,base

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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