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A039047 Numbers n such that representation in base 7 has same number of 4's and 5's. 0
0, 1, 2, 3, 6, 7, 8, 9, 10, 13, 14, 15, 16, 17, 20, 21, 22, 23, 24, 27, 33, 39, 42, 43, 44, 45, 48, 49, 50, 51, 52, 55, 56, 57, 58, 59, 62, 63, 64, 65, 66, 69, 70, 71, 72, 73, 76, 82, 88, 91, 92, 93, 94, 97, 98, 99, 100, 101, 104, 105, 106, 107, 108, 111, 112, 113, 114 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..67.

MATHEMATICA

Select[Range[0, 200], DigitCount[#, 7, 4]==DigitCount[#, 7, 5]&] (* Harvey P. Dale, Mar 22 2011 *)

CROSSREFS

Sequence in context: A050019 A163099 A047287 * A047246 A039029 A037460

Adjacent sequences:  A039044 A039045 A039046 * A039048 A039049 A039050

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified December 15 20:00 EST 2019. Contains 330000 sequences. (Running on oeis4.)