A043103 Numbers k such that 1 and 2 occur juxtaposed in the base-4 representation of k but not of k-1.

6, 9, 22, 24, 36, 41, 54, 57, 70, 73, 86, 88, 96, 118, 121, 134, 137, 144, 164, 169, 182, 185, 198, 201, 214, 216, 228, 233, 246, 249, 262, 265, 278, 280, 292, 297, 310, 313, 326, 329, 342, 344, 352, 374, 377, 384, 454, 457, 470

Offset

1,1

Links

Table of n, a(n) for n=1..49.

Crossrefs

Cf. A007090.

Sequence in context: A358222 A165717 A239874 * A242756 A268665 A043883

Adjacent sequences: A043100 A043101 A043102 * A043104 A043105 A043106

Keyword

nonn,base

Author

Clark Kimberling

Status

approved