A294855 Number of compositions (ordered partitions) of 1 into exactly 7*n+1 powers of 1/8.

1, 1, 6435, 1097525253, 1713228373452375, 14303426764164190428105, 460977928965130046448503507051, 46050764886573707269872023694736134925, 12176825528022093702548525617184407475359333407, 7565469782615095731665958935875509379368611893407583633

Offset

0,3

Links

Alois P. Heinz, Table of n, a(n) for n = 0..79

Formula

a(n) = [x^(8^n)] (Sum_{j=0..7*n+1} x^(8^j))^(7*n+1).

Crossrefs

Column k=7 of A294746.

Sequence in context: A194720 A140916 A208621 * A025040 A236092 A074978

Adjacent sequences: A294852 A294853 A294854 * A294856 A294857 A294858

Keyword

nonn

Author

Alois P. Heinz, Nov 09 2017

Status

approved