A054130 T(n,4), array T as in A054126.

2, 11, 58, 236, 802, 2396, 6508, 16448, 39331, 90102, 199652, 431128, 912644, 1902808, 3921896, 8014336, 16273829, 32893762, 66268224, 133194248, 267276526, 535737092, 1073034964, 2148105728, 4298841031, 8601047918, 17206367884, 34418115384, 68842955288

Offset

4,1

Links

Table of n, a(n) for n=4..32.

Index entries for linear recurrences with constant coefficients, signature (10,-44,112,-182,196,-140,64,-17,2).

Formula

G.f.: x^4*(x-2)*(x^2-x+1)*(x^6-6*x^5+15*x^4-19*x^3+12*x^2-3*x+1) / ((x-1)^8*(2*x-1)). - Colin Barker, Jan 26 2014

Prog

(PARI) Vec(x^4*(x-2)*(x^2-x+1)*(x^6-6*x^5+15*x^4-19*x^3+12*x^2-3*x+1)/((x-1)^8*(2*x-1)) + O(x^100)) \\ Colin Barker, Jan 26 2014

Crossrefs

Sequence in context: A240888 A120464 A164581 * A037738 A037633 A241103

Adjacent sequences: A054127 A054128 A054129 * A054131 A054132 A054133

Keyword

nonn,easy

Author

Clark Kimberling

Extensions

More terms from Colin Barker, Jan 26 2014

Status

approved