A039268 Numbers whose base-12 representation has the same number of 7's and 11's.

0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 32, 33, 34, 36, 37, 38, 39, 40, 41, 42, 44, 45, 46, 48, 49, 50, 51, 52, 53, 54, 56, 57, 58, 60, 61, 62, 63, 64, 65, 66, 68, 69, 70, 72, 73, 74, 75, 76, 77, 78, 80

Offset

1,3

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Mathematica

Select[Range[0, 100], DigitCount[#, 12, 7] == DigitCount[#, 12, 11] &] (* Vincenzo Librandi, Oct 20 2012 *)

Prog

(Magma) [n: n in [0..100] | Multiplicity(S, 7) eq Multiplicity(S, 11) where S is {*d: d in Intseq(n, 12)*}]; // Bruno Berselli, Oct 20 2012

Crossrefs

Sequence in context: A348579 A052083 A192188 * A039162 A328216 A071959

Adjacent sequences: A039265 A039266 A039267 * A039269 A039270 A039271

Keyword

nonn,base,easy

Author

Olivier Gérard

Extensions

An incorrect g.f. was deleted by N. J. A. Sloane, Sep 13 2009

Status

approved