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A044543 Numbers n such that string 3,3 occurs in the base 7 representation of n but not of n+1. 0
24, 73, 122, 174, 220, 269, 318, 367, 416, 465, 517, 563, 612, 661, 710, 759, 808, 860, 906, 955, 1004, 1053, 1102, 1151, 1224, 1249, 1298, 1347, 1396, 1445, 1494, 1546, 1592, 1641, 1690, 1739, 1788, 1837, 1889, 1935, 1984 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..41.

MATHEMATICA

Transpose[SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 7], {3, 3}]>0, 1, 0], {n, 3000}], {1, 0}]][[1]] (* The program uses the SequencePosition and SequenceCount functions from Mathematica version 10 *) (* Harvey P. Dale, May 18 2015 *)

CROSSREFS

Sequence in context: A042128 A043406 A044162 * A161587 A042130 A042132

Adjacent sequences:  A044540 A044541 A044542 * A044544 A044545 A044546

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 17 08:30 EDT 2022. Contains 353741 sequences. (Running on oeis4.)