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A036683 T(n+4,4) with T as in A036355. 1
5, 20, 71, 207, 556, 1390, 3310, 7576, 16807, 36331, 76850, 159575, 326092, 657124, 1307992, 2575180, 5020570, 9702043, 18599391, 35397328, 66918850, 125738650, 234930380, 436660010, 807690455, 1487269940, 2727149885, 4981046893 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..27.

Index entries for linear recurrences with constant coefficients, signature (5,-5,-10,15,11,-15,-10,5,5,1).

FORMULA

G.f.: (x^4+2x^3-4x^2-5x+5)/(1-x-x^2)^5.

a(n) = A001628(n)+3*A001872(n)+A001873(n). - R. J. Mathar, Jul 03 2022

CROSSREFS

Sequence in context: A154638 A054889 A056384 * A054444 A121332 A122695

Adjacent sequences: A036680 A036681 A036682 * A036684 A036685 A036686

KEYWORD

nonn,easy

AUTHOR

Floor van Lamoen

STATUS

approved

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Last modified February 7 22:58 EST 2023. Contains 360132 sequences. (Running on oeis4.)