A043919 Numbers k such that 1 and 4 occur juxtaposed in the base-7 representation of k but not of k+1.

11, 29, 60, 83, 109, 127, 158, 176, 209, 225, 256, 274, 305, 323, 354, 372, 403, 426, 452, 470, 501, 519, 587, 599, 617, 648, 666, 697, 715, 746, 769, 795, 813, 844, 862, 895, 911, 942, 960, 991, 1009, 1040, 1058, 1089, 1112

Offset

1,1

Links

Table of n, a(n) for n=1..45.

Crossrefs

Cf. A007093.

Sequence in context: A171667 A340573 A043139 * A120946 A216296 A099909

Adjacent sequences: A043916 A043917 A043918 * A043920 A043921 A043922

Keyword

nonn,base

Author

Clark Kimberling

Status

approved