A031494 Numbers whose base-9 representation has 2 more 0's than 8's.

81, 162, 243, 324, 405, 486, 567, 730, 731, 732, 733, 734, 735, 736, 738, 747, 756, 765, 774, 783, 792, 810, 891, 972, 1053, 1134, 1215, 1296, 1459, 1460, 1461, 1462, 1463, 1464, 1465, 1467, 1476, 1485, 1494, 1503, 1512, 1521, 1539, 1620, 1701, 1782, 1863

Offset

1,1

Links

Table of n, a(n) for n=1..47.

Mathematica

Select[Range@2000, (s=#; Differences[Count[IntegerDigits[s, 9], #]&/@{0, 8}]=={-2})&] (* Giorgos Kalogeropoulos, Jul 04 2021 *)
Select[Range[2000], DigitCount[#, 9, 0]==DigitCount[#, 9, 8]+2&] (* Harvey P. Dale, Dec 02 2024 *)

Crossrefs

Cf. A007095.

Sequence in context: A044251 A043454 A044632 * A043324 A267696 A232923

Adjacent sequences: A031491 A031492 A031493 * A031495 A031496 A031497

Keyword

nonn,base

Author

Clark Kimberling

Extensions

More terms from Harvey P. Dale, Dec 02 2024

Status

approved