A039047 - OEIS

A039047

Numbers whose base-7 representation has the same number of 4's and 5's.

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

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

MATHEMATICA

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

CROSSREFS

Cf. A007093.

Sequence in context: A050019 A163099 A047287 * A372439 A336205 A047246

Adjacent sequences: A039044 A039045 A039046 * A039048 A039049 A039050

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved