A044264 Numbers n such that string 1,4 occurs in the base 9 representation of n but not of n-1.

13, 94, 117, 175, 256, 337, 418, 499, 580, 661, 742, 823, 846, 904, 985, 1053, 1147, 1228, 1309, 1390, 1471, 1552, 1575, 1633, 1714, 1795, 1876, 1957, 2038, 2119, 2200, 2281, 2304, 2362, 2443, 2524, 2605, 2686, 2767, 2848

Offset

1,1

Links

Table of n, a(n) for n=1..40.

Mathematica

With[{c={1, 4}}, Select[Range[3000], MemberQ[Partition[IntegerDigits[ #, 9], 2, 1], c]&& !MemberQ[Partition[IntegerDigits[#-1, 9], 2, 1], c]&]] (* Harvey P. Dale, Oct 31 2011 *)

Crossrefs

Sequence in context: A038742 A282709 A005414 * A044645 A153703 A222503

Adjacent sequences: A044261 A044262 A044263 * A044265 A044266 A044267

Keyword

nonn,base

Author

Clark Kimberling

Status

approved