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A044276 Numbers n such that string 2,7 occurs in the base 9 representation of n but not of n-1. 0
25, 106, 187, 225, 268, 349, 430, 511, 592, 673, 754, 835, 916, 954, 997, 1078, 1159, 1240, 1321, 1402, 1483, 1564, 1645, 1683, 1726, 1807, 1888, 1969, 2025, 2131, 2212, 2293, 2374, 2412, 2455, 2536, 2617, 2698, 2779, 2860 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..40.

MATHEMATICA

Select[Range[3000], MemberQ[Partition[IntegerDigits[#, 9], 2, 1], {2, 7}]&&!MemberQ[Partition[IntegerDigits[#-1, 9], 2, 1], {2, 7}]&]  (* Harvey P. Dale, Sep 30 2011 *)

CROSSREFS

Sequence in context: A114254 A042222 A158551 * A044657 A160437 A050589

Adjacent sequences:  A044273 A044274 A044275 * A044277 A044278 A044279

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified August 18 14:22 EDT 2022. Contains 356215 sequences. (Running on oeis4.)