A043144 Numbers k such that 2 and 5 occur juxtaposed in the base-7 representation of k but not of k-1.

19, 37, 68, 86, 117, 133, 166, 184, 215, 233, 259, 282, 313, 331, 362, 380, 411, 429, 460, 476, 509, 527, 558, 576, 602, 625, 656, 674, 705, 723, 754, 772, 803, 819, 852, 870, 901, 919, 931, 999, 1017, 1048, 1066, 1097, 1115

Offset

1,1

Links

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

Crossrefs

Cf. A007093.

Sequence in context: A259648 A154944 A039321 * A043924 A301617 A211821

Adjacent sequences: A043141 A043142 A043143 * A043145 A043146 A043147

Keyword

nonn,base

Author

Clark Kimberling

Status

approved