A043414 Numbers whose base-7 representation contains exactly two 5's.

40, 89, 138, 187, 236, 250, 257, 264, 271, 278, 280, 281, 282, 283, 284, 286, 292, 334, 383, 432, 481, 530, 579, 593, 600, 607, 614, 621, 623, 624, 625, 626, 627, 629, 635, 677, 726, 775, 824, 873, 922, 936, 943, 950, 957, 964

Offset

1,1

Links

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

Mathematica

Select[Range[1000], DigitCount[#, 7, 5]==2&]  (* Harvey P. Dale, Apr 03 2011 *)

Crossrefs

Cf. A007093.

Sequence in context: A203855 A188335 A185718 * A044178 A044559 A092613

Adjacent sequences: A043411 A043412 A043413 * A043415 A043416 A043417

Keyword

nonn,base

Author

Clark Kimberling

Status

approved