A044420 Numbers n such that string 8,8 occurs in the base 10 representation of n but not of n-1.

88, 188, 288, 388, 488, 588, 688, 788, 880, 988, 1088, 1188, 1288, 1388, 1488, 1588, 1688, 1788, 1880, 1988, 2088, 2188, 2288, 2388, 2488, 2588, 2688, 2788, 2880, 2988, 3088, 3188, 3288, 3388, 3488, 3588, 3688, 3788, 3880

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n], {8, 8}]>0, 1, 0], {n, 4000}], {0, 1}][[;; , 2]] (* Harvey P. Dale, Jan 29 2025 *)

Crossrefs

Sequence in context: A050224 A270299 A043522 * A044801 A342451 A062036

Adjacent sequences: A044417 A044418 A044419 * A044421 A044422 A044423

Keyword

nonn,base

Author

Clark Kimberling

Status

approved