A020702 Expansion of (1+x^10)/((1-x)*(1-x^2)*(1-x^3)*(1-x^5)).

1, 1, 2, 3, 4, 6, 8, 10, 13, 16, 21, 25, 31, 37, 44, 53, 62, 72, 84, 96, 111, 126, 143, 161, 181, 203, 226, 251, 278, 306, 338, 370, 405, 442, 481, 523, 567, 613, 662, 713, 768, 824, 884, 946, 1011, 1080, 1151, 1225, 1303, 1383, 1468, 1555, 1646

Offset: 0

Author

G. Nebe, E. Rains, N. J. A. Sloane, Apr 05 2002

Keywords

• nonn

Comments

Rescaled version of Molien series for self-dual Quebbemann codes over GF(4).

Links

• G. Nebe, E. M. Rains and N. J. A. Sloane, Self-Dual Codes and Invariant Theory, Springer, Berlin, 2006.
• Index entries for Molien series
• Index entries for linear recurrences with constant coefficients, signature (1,1,0,-1,0,0,-1,0,1,1,-1).

Crossrefs

Different from A067996.

Formula

a(n) ~ 1/90*n^3 + 1/15*n^2. - Ralf Stephan, Apr 29 2014