A044545 Numbers n such that string 3,5 occurs in the base 7 representation of n but not of n+1.

26, 75, 124, 173, 188, 222, 271, 320, 369, 418, 467, 516, 531, 565, 614, 663, 712, 761, 810, 859, 874, 908, 957, 1006, 1055, 1104, 1153, 1202, 1217, 1251, 1322, 1349, 1398, 1447, 1496, 1545, 1560, 1594, 1643, 1692, 1741, 1790

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Mathematica

Flatten[Position[Partition[If[MemberQ[Partition[IntegerDigits[#, 7], 2, 1], {3, 5}], 1, 0]&/@Range[2000], 2, 1], _?(#=={1, 0}&)]] (* Harvey P. Dale, Jul 09 2014 *)

Crossrefs

Sequence in context: A065302 A353635 A044164 * A255185 A251074 A304657

Adjacent sequences: A044542 A044543 A044544 * A044546 A044547 A044548

Keyword

nonn,base

Author

Clark Kimberling

Status

approved