A004156 Odd numbers written backwards.

1, 3, 5, 7, 9, 11, 31, 51, 71, 91, 12, 32, 52, 72, 92, 13, 33, 53, 73, 93, 14, 34, 54, 74, 94, 15, 35, 55, 75, 95, 16, 36, 56, 76, 96, 17, 37, 57, 77, 97, 18, 38, 58, 78, 98, 19, 39, 59, 79, 99, 101, 301, 501, 701, 901, 111, 311, 511, 711, 911, 121, 321, 521

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• base

Crossrefs

Cf. A005408.

Formula

a(n) = A004086(A005408(n)). - Michel Marcus, Apr 05 2014

Extensions

More terms from Eric M. Schmidt, Apr 04 2014