A094259 G.f.: (1-5*x)/((1-6*x)*(1-x)^2).

1, 3, 11, 55, 315, 1871, 11203, 67191, 403115, 2418655, 14511891, 87071303, 522427771, 3134566575, 18807399395, 112844396311, 677066377803, 4062398266751, 24374389600435, 146246337602535, 877478025615131, 5264868153690703, 31589208922144131, 189535253532864695

Offset

0,2

Links

Table of n, a(n) for n=0..23.

Index entries for linear recurrences with constant coefficients, signature (8,-13,6).

Formula

a(n) = (6^(n+1)+20n+19)/25.

Crossrefs

A row of A094250.

Sequence in context: A242952 A266027 A306177 * A091845 A020061 A330041

Adjacent sequences: A094256 A094257 A094258 * A094260 A094261 A094262

Keyword

nonn,easy

Author

N. J. A. Sloane, Jun 02 2004

Status

approved