A044687 Numbers n such that string 6,1 occurs in the base 9 representation of n but not of n+1.

55, 136, 217, 298, 379, 460, 503, 541, 622, 703, 784, 865, 946, 1027, 1108, 1189, 1232, 1270, 1351, 1432, 1513, 1594, 1675, 1756, 1837, 1918, 1961, 1999, 2080, 2161, 2242, 2323, 2404, 2485, 2566, 2647, 2690, 2728, 2809

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {6, 1}]>0, 1, 0], {n, 3000}], {1, 0}][[All, 1]] (* Harvey P. Dale, May 25 2022 *)

Crossrefs

Sequence in context: A224459 A218161 A044306 * A250578 A130745 A096664

Adjacent sequences: A044684 A044685 A044686 * A044688 A044689 A044690

Keyword

nonn,base

Author

Clark Kimberling

Status

approved