A043163 Numbers k such that 1 and 6 occur juxtaposed in the base-8 representation of k but not of k-1.

14, 49, 78, 112, 142, 177, 206, 241, 270, 305, 334, 369, 392, 433, 462, 497, 526, 561, 590, 624, 654, 689, 718, 753, 782, 817, 846, 881, 896, 974, 1009, 1038, 1073, 1102, 1136, 1166, 1201, 1230, 1265, 1294, 1329, 1358, 1393

Offset

1,1

Links

Table of n, a(n) for n=1..43.

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 8], {1, 6}|{6, 1}]>0, 1, 0], {n, 1500}], {0, 1}][[;; , 2]] (* Harvey P. Dale, Aug 06 2023 *)

Crossrefs

Cf. A007094.

Sequence in context: A251228 A250973 A039340 * A043943 A367360 A308834

Adjacent sequences: A043160 A043161 A043162 * A043164 A043165 A043166

Keyword

nonn,base

Author

Clark Kimberling

Status

approved