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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
OFFSET
1,1
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
KEYWORD
nonn,base
STATUS
approved