A039070 - OEIS

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A039070

Numbers whose base-8 representation has the same number of 3's and 7's.

0, 1, 2, 4, 5, 6, 8, 9, 10, 12, 13, 14, 16, 17, 18, 20, 21, 22, 31, 32, 33, 34, 36, 37, 38, 40, 41, 42, 44, 45, 46, 48, 49, 50, 52, 53, 54, 59, 64, 65, 66, 68, 69, 70, 72, 73, 74, 76, 77, 78, 80, 81, 82, 84, 85, 86, 95, 96, 97, 98, 100, 101, 102, 104, 105, 106, 108, 109

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

LINKS

Table of n, a(n) for n=1..68.

MATHEMATICA

Select[Range[200], With[{dc=DigitCount[#, 8]}, dc[[3]]==dc[[7]]&]] (* Harvey P. Dale, Aug 09 2011 *)

CROSSREFS

Sequence in context: A184421 A329978 A329839 * A059553 A249245 A279607

Adjacent sequences: A039067 A039068 A039069 * A039071 A039072 A039073

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved