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A044071 Numbers n such that string 2,2 occurs in the base 4 representation of n but not of n-1. 0
10, 26, 40, 58, 74, 90, 104, 122, 138, 154, 160, 186, 202, 218, 232, 250, 266, 282, 296, 314, 330, 346, 360, 378, 394, 410, 416, 442, 458, 474, 488, 506, 522, 538, 552, 570, 586, 602, 616, 634, 640, 714, 730, 744, 762, 778, 794 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..47.

MATHEMATICA

Transpose[SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 4], {2, 2}]>0, 1, 0], {n, 1000}], {0, 1}]][[2]] (* The program uses the SequencePosition and Sequence Count functions from Mathematica version 10 *) (* Harvey P. Dale, Feb 23 2016 *)

CROSSREFS

Sequence in context: A080059 A071348 A055042 * A186279 A054315 A113770

Adjacent sequences:  A044068 A044069 A044070 * A044072 A044073 A044074

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified October 28 06:41 EDT 2021. Contains 348316 sequences. (Running on oeis4.)