A044792 Numbers n such that string 7,9 occurs in the base 10 representation of n but not of n+1.

79, 179, 279, 379, 479, 579, 679, 779, 799, 879, 979, 1079, 1179, 1279, 1379, 1479, 1579, 1679, 1779, 1799, 1879, 1979, 2079, 2179, 2279, 2379, 2479, 2579, 2679, 2779, 2799, 2879, 2979, 3079, 3179, 3279, 3379, 3479, 3579

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n], {7, 9}]>0, 1, 0], {n, 3600}], {1, 0}][[All, 1]] (* Harvey P. Dale, May 07 2022 *)

Crossrefs

Sequence in context: A118798 A082929 A044411 * A244775 A142493 A063328

Adjacent sequences: A044789 A044790 A044791 * A044793 A044794 A044795

Keyword

nonn,base

Author

Clark Kimberling

Status

approved