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A037954 C(n,[ (n-7)/2 ]). 1
0, 0, 0, 0, 0, 0, 0, 1, 1, 9, 10, 55, 66, 286, 364, 1365, 1820, 6188, 8568, 27132, 38760, 116280, 170544, 490314, 735471, 2042975, 3124550, 8436285, 13123110, 34597290, 54627300, 141120525, 225792840 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,10

LINKS

Table of n, a(n) for n=0..32.

FORMULA

Conjecture: -(n+8)*(n-7)*a(n) +2*(n)*a(n-1) +4*(n-1)*n*a(n-2)=0. - R. J. Mathar, Jul 26 2015

CROSSREFS

Sequence in context: A248353 A156857 A259914 * A271062 A041174 A048070

Adjacent sequences:  A037951 A037952 A037953 * A037955 A037956 A037957

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified November 14 15:21 EST 2019. Contains 329126 sequences. (Running on oeis4.)