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A043890
Numbers k such that 1 and 2 occur juxtaposed in the base-5 representation of k but not of k+1.
0
7, 11, 32, 39, 59, 61, 82, 86, 107, 111, 132, 136, 157, 164, 199, 207, 211, 232, 236, 257, 261, 299, 309, 311, 332, 336, 357, 361, 382, 386, 407, 414, 434, 436, 457, 461, 482, 486, 507, 511, 532, 539, 559, 561, 582, 586, 607, 611
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..48.
CROSSREFS
Cf. A007091.
Sequence in context: A228029 A053711 A043110 * A132355 A241573 A215442
Adjacent sequences: A043887 A043888 A043889 * A043891 A043892 A043893
KEYWORD
nonn,base
AUTHOR
Clark Kimberling
STATUS
approved

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Last modified September 29 19:20 EDT 2024. Contains 376324 sequences.
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