A039205 Numbers whose base-11 representation has the same number of 7's and 9's.

0, 1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 14, 15, 16, 17, 19, 21, 22, 23, 24, 25, 26, 27, 28, 30, 32, 33, 34, 35, 36, 37, 38, 39, 41, 43, 44, 45, 46, 47, 48, 49, 50, 52, 54, 55, 56, 57, 58, 59, 60, 61, 63, 65, 66, 67, 68, 69, 70, 71, 72, 74, 76, 86, 88, 89, 90, 91, 92, 93

Offset

1,3

Links

Table of n, a(n) for n=1..70.

Mathematica

Select[Range[0, 100], DigitCount[#, 11, 7]==DigitCount[#, 11, 9]&] (* Harvey P. Dale, Jul 04 2011 *)

Crossrefs

Sequence in context: A360414 A270193 A039266 * A039154 A039083 A178596

Adjacent sequences: A039202 A039203 A039204 * A039206 A039207 A039208

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved