A140783 Digit sum of A091137(n).

1, 2, 3, 6, 9, 9, 18, 18, 27, 27, 27, 27, 45, 45, 45, 63, 54, 54, 63, 72, 54, 81, 99, 90, 81, 90, 99, 99, 99, 126, 117, 135, 189, 198, 171, 180, 171, 180, 171, 180, 189, 162, 189, 207, 180, 198, 207, 243, 261, 243, 297, 270, 243, 261, 279, 288, 324, 342, 315, 315

Offset: 0

Author

Paul Curtz, Jul 13 2008

Keywords

• nonn
• base

Formula

a(n)= A007953(A091137(n)). - R. J. Mathar, Jul 29 2008

Extensions

Edited and extended by R. J. Mathar, Jul 29 2008