A043394 Numbers whose base-7 representation contains exactly two 0's.

49, 98, 147, 196, 245, 294, 344, 345, 346, 347, 348, 349, 350, 357, 364, 371, 378, 385, 392, 441, 490, 539, 588, 637, 687, 688, 689, 690, 691, 692, 693, 700, 707, 714, 721, 728, 735, 784, 833, 882, 931, 980, 1030, 1031, 1032, 1033

Offset

1,1

Links

Table of n, a(n) for n=1..46.

Mathematica

Select[Range[1100], DigitCount[#, 7, 0]==2&] (* Harvey P. Dale, Aug 18 2015 *)

Crossrefs

Cf. A007093.

Sequence in context: A309541 A174386 A044138 * A044519 A031484 A260009

Adjacent sequences: A043391 A043392 A043393 * A043395 A043396 A043397

Keyword

nonn,base

Author

Clark Kimberling

Status

approved