A039147 Numbers whose base-10 representation has the same number of 5's and 7's.

0, 1, 2, 3, 4, 6, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 21, 22, 23, 24, 26, 28, 29, 30, 31, 32, 33, 34, 36, 38, 39, 40, 41, 42, 43, 44, 46, 48, 49, 57, 60, 61, 62, 63, 64, 66, 68, 69, 75, 80, 81, 82, 83, 84, 86, 88, 89, 90, 91, 92, 93, 94, 96, 98, 99, 100, 101, 102

Offset

1,3

Links

Table of n, a(n) for n=1..69.

Mathematica

Select[Range[0, 110], DigitCount[#, 10, 5]==DigitCount[#, 10, 7]&] (* Harvey P. Dale, Jul 26 2011 *)

Crossrefs

Sequence in context: A151988 A039255 A039196 * A039107 A317544 A047420

Adjacent sequences: A039144 A039145 A039146 * A039148 A039149 A039150

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved