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A031493 Numbers whose base-9 representation has one more 0 than 8's. 0
9, 18, 27, 36, 45, 54, 63, 82, 83, 84, 85, 86, 87, 88, 90, 99, 108, 117, 126, 135, 144, 163, 164, 165, 166, 167, 168, 169, 171, 180, 189, 198, 207, 216, 225, 244, 245, 246, 247, 248, 249, 250, 252, 261, 270, 279, 288, 297, 306, 325 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..50.

MATHEMATICA

Select[Range@400, (s=#; Differences[Count[IntegerDigits[s, 9], #]&/@{0, 8}]=={-1})&] (* Giorgos Kalogeropoulos, Jul 04 2021 *)

CROSSREFS

Cf. A007095.

Sequence in context: A178896 A217373 A033021 * A020336 A044834 A033006

Adjacent sequences:  A031490 A031491 A031492 * A031494 A031495 A031496

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 28 04:02 EDT 2022. Contains 354112 sequences. (Running on oeis4.)