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A044133 Numbers n such that string 5,1 occurs in the base 6 representation of n but not of n-1. 0
31, 67, 103, 139, 175, 186, 211, 247, 283, 319, 355, 391, 402, 427, 463, 499, 535, 571, 607, 618, 643, 679, 715, 751, 787, 823, 834, 859, 895, 931, 967, 1003, 1039, 1050, 1075, 1111, 1116, 1183, 1219, 1255, 1266, 1291, 1327 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..43.

MATHEMATICA

Transpose[SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 6], {5, 1}]>0, 1, 0], {n, 1500}], {0, 1}]][[2]] (* The program uses the SequencePosition and SequenceCount functions from Mathematica version 10 *) (* Harvey P. Dale, Aug 07 2015 *)

CROSSREFS

Sequence in context: A132772 A116324 A179571 * A044514 A142110 A110831

Adjacent sequences:  A044130 A044131 A044132 * A044134 A044135 A044136

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified September 26 09:15 EDT 2021. Contains 347664 sequences. (Running on oeis4.)