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A039266 Numbers whose base-12 representation has the same number of 7's and 9's. 1
0, 1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 22, 23, 24, 25, 26, 27, 28, 29, 30, 32, 34, 35, 36, 37, 38, 39, 40, 41, 42, 44, 46, 47, 48, 49, 50, 51, 52, 53, 54, 56, 58, 59, 60, 61, 62, 63, 64, 65, 66, 68, 70, 71, 72, 73, 74, 75, 76, 77, 78, 80 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
MATHEMATICA
Select[Range[0, 100], DigitCount[#, 12, 7] == DigitCount[#, 12, 9] &] (* Vincenzo Librandi, Oct 20 2012 *)
PROG
(Magma) [n: n in [0..100] | Multiplicity(S, 7) eq Multiplicity(S, 9) where S is {*d: d in Intseq(n, 12)*}]; // Bruno Berselli, Oct 20 2012
CROSSREFS
Sequence in context: A073956 A360414 A270193 * A039205 A039154 A039083
KEYWORD
nonn,base,easy
AUTHOR
EXTENSIONS
An incorrect g.f. was deleted by N. J. A. Sloane, Sep 13 2009
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)