A044645 Numbers k such that string 1,4 occurs in the base 9 representation of k but not of k+1.

13, 94, 125, 175, 256, 337, 418, 499, 580, 661, 742, 823, 854, 904, 985, 1133, 1147, 1228, 1309, 1390, 1471, 1552, 1583, 1633, 1714, 1795, 1876, 1957, 2038, 2119, 2200, 2281, 2312, 2362, 2443, 2524, 2605, 2686, 2767, 2848

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {1, 4}]>0, 1, 0], {n, 3000}], {1, 0}][[;; , 1]] (* Harvey P. Dale, Apr 29 2025 *)

Crossrefs

Sequence in context: A282709 A005414 A044264 * A153703 A222503 A320282

Adjacent sequences: A044642 A044643 A044644 * A044646 A044647 A044648

Keyword

nonn,base

Author

Clark Kimberling

Status

approved