A044445 Numbers n such that string 0,3 occurs in the base 4 representation of n but not of n+1.

19, 35, 51, 67, 79, 83, 99, 115, 131, 143, 147, 163, 179, 195, 207, 211, 227, 243, 259, 271, 275, 291, 319, 323, 335, 339, 355, 371, 387, 399, 403, 419, 435, 451, 463, 467, 483, 499, 515, 527, 531, 547, 575, 579, 591, 595, 611

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 4], {0, 3}]>0, 1, 0], {n, 700}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Oct 11 2017 *)

Crossrefs

Sequence in context: A214231 A242847 A044064 * A166055 A333414 A146579

Adjacent sequences: A044442 A044443 A044444 * A044446 A044447 A044448

Keyword

nonn,base

Author

Clark Kimberling

Status

approved