A044293 Numbers n such that string 4,6 occurs in the base 9 representation of n but not of n-1.

42, 123, 204, 285, 366, 378, 447, 528, 609, 690, 771, 852, 933, 1014, 1095, 1107, 1176, 1257, 1338, 1419, 1500, 1581, 1662, 1743, 1824, 1836, 1905, 1986, 2067, 2148, 2229, 2310, 2391, 2472, 2553, 2565, 2634, 2715, 2796

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {4, 6}]>0, 1, 0], {n, 3000}], {0, 1}][[All, 2]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jul 12 2017 *)

Crossrefs

Sequence in context: A239590 A064498 A113518 * A044674 A261995 A298236

Adjacent sequences: A044290 A044291 A044292 * A044294 A044295 A044296

Keyword

nonn,base

Author

Clark Kimberling

Status

approved