A044117 Numbers n such that string 2,3 occurs in the base 6 representation of n but not of n-1.

15, 51, 87, 90, 123, 159, 195, 231, 267, 303, 306, 339, 375, 411, 447, 483, 519, 522, 540, 591, 627, 663, 699, 735, 738, 771, 807, 843, 879, 915, 951, 954, 987, 1023, 1059, 1095, 1131, 1167, 1170, 1203, 1239, 1275, 1311, 1347

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

Select[Range[1500], MemberQ[Partition[IntegerDigits[#, 6], 2, 1], {2, 3}] && !MemberQ[Partition[IntegerDigits[#-1, 6], 2, 1], {2, 3}]&] (* Harvey P. Dale, Mar 16 2012 *)
SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 6], {2, 3}]>0, 1, 0], {n, 1500}], {0, 1}][[;; , 2]] (* Harvey P. Dale, Mar 19 2026 *)

Crossrefs

Sequence in context: A075929 A337295 A334530 * A044498 A138082 A002602

Adjacent sequences: A044114 A044115 A044116 * A044118 A044119 A044120

Keyword

nonn,base

Author

Clark Kimberling

Status

approved