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A044069 Numbers n such that string 2,0 occurs in the base 4 representation of n but not of n-1. 0
8, 24, 32, 40, 56, 72, 88, 96, 104, 120, 128, 152, 160, 168, 184, 200, 216, 224, 232, 248, 264, 280, 288, 296, 312, 328, 344, 352, 360, 376, 384, 408, 416, 424, 440, 456, 472, 480, 488, 504, 512, 584, 600, 608, 616, 632, 640, 664 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..48.

MATHEMATICA

Select[Range[700], MemberQ[Partition[IntegerDigits[#, 4], 2, 1], {2, 0}] && !MemberQ[Partition[IntegerDigits[#-1, 4], 2, 1], {2, 0}]&] (* Harvey P. Dale, Jun 14 2013 *)

CROSSREFS

Sequence in context: A340930 A269420 A056196 * A028628 A333427 A128690

Adjacent sequences:  A044066 A044067 A044068 * A044070 A044071 A044072

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified September 25 15:27 EDT 2021. Contains 347658 sequences. (Running on oeis4.)