Numbers n such that representation in base 12 has same number of 9's and 11's.
0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 24, 25, 26, 27, 28, 29
2 seqfan posts
Fri Sep 11 21:11:39 CEST 2009 [seqfan] Re: Gen. Functs. A039219