A043149 Numbers k such that 4 and 5 occur juxtaposed in the base-7 representation of k but not of k-1.

33, 39, 82, 88, 131, 137, 180, 186, 229, 231, 273, 284, 327, 333, 376, 382, 425, 431, 474, 480, 523, 529, 572, 574, 616, 627, 670, 676, 719, 725, 768, 774, 817, 823, 866, 872, 915, 917, 959, 970, 1013, 1019, 1062, 1068, 1111

Offset

1,1

Links

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

Crossrefs

Cf. A007093.

Sequence in context: A223733 A083883 A039326 * A043929 A180656 A034070

Adjacent sequences: A043146 A043147 A043148 * A043150 A043151 A043152

Keyword

nonn,base

Author

Clark Kimberling

Status

approved