A039077 Numbers whose base-9 representation has the same number of 0's and 1's.

2, 3, 4, 5, 6, 7, 8, 9, 20, 21, 22, 23, 24, 25, 26, 29, 30, 31, 32, 33, 34, 35, 38, 39, 40, 41, 42, 43, 44, 47, 48, 49, 50, 51, 52, 53, 56, 57, 58, 59, 60, 61, 62, 65, 66, 67, 68, 69, 70, 71, 74, 75, 76, 77, 78, 79, 80, 83, 84, 85, 86, 87, 88, 89, 99, 108, 117, 126, 135

Offset

1,1

Links

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

Mathematica

Select[Range[150], DigitCount[#, 9, 0]==DigitCount[#, 9, 1]&] (* Harvey P. Dale, Dec 23 2011 *)

Crossrefs

Cf. A007095.

Sequence in context: A118761 A024657 A140281 * A247803 A362093 A052383

Adjacent sequences: A039074 A039075 A039076 * A039078 A039079 A039080

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved