A044327 - OEIS

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A044327

Numbers n such that string 8,4 occurs in the base 9 representation of n but not of n-1.

76, 157, 238, 319, 400, 481, 562, 643, 684, 724, 805, 886, 967, 1048, 1129, 1210, 1291, 1372, 1413, 1453, 1534, 1615, 1696, 1777, 1858, 1939, 2020, 2101, 2142, 2182, 2263, 2344, 2425, 2506, 2587, 2668, 2749, 2830, 2871

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..39.

MATHEMATICA

Flatten[Position[Partition[Table[If[MemberQ[Partition[IntegerDigits[n, 9], 2, 1], {8, 4}], 1, 0], {n, 3000}], 2, 1], {0, 1}]]+1 (* Harvey P. Dale, Mar 11 2015 *)

CROSSREFS

Sequence in context: A004924 A004944 A063359 * A044708 A099944 A329542

Adjacent sequences: A044324 A044325 A044326 * A044328 A044329 A044330

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved