A039107 Numbers whose base-9 representation has the same number of 5's and 7's.

0, 1, 2, 3, 4, 6, 8, 9, 10, 11, 12, 13, 15, 17, 18, 19, 20, 21, 22, 24, 26, 27, 28, 29, 30, 31, 33, 35, 36, 37, 38, 39, 40, 42, 44, 52, 54, 55, 56, 57, 58, 60, 62, 68, 72, 73, 74, 75, 76, 78, 80, 81, 82, 83, 84, 85, 87, 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, 120], DigitCount[#, 9, 5]==DigitCount[#, 9, 7]&] (* Harvey P. Dale, Apr 07 2013 *)

Crossrefs

Cf. A007095.

Sequence in context: A039255 A039196 A039147 * A317544 A047420 A039075

Adjacent sequences: A039104 A039105 A039106 * A039108 A039109 A039110

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved