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A011932 [ n(n-1)(n-2)(n-3)/22 ]. 0
0, 0, 0, 0, 1, 5, 16, 38, 76, 137, 229, 360, 540, 780, 1092, 1489, 1985, 2596, 3338, 4228, 5285, 6529, 7980, 9660, 11592, 13800, 16309, 19145, 22336, 25910, 29896, 34325, 39229, 44640, 50592, 57120, 64260 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

LINKS

Table of n, a(n) for n=0..36.

CROSSREFS

Sequence in context: A218259 A211807 A174723 * A131283 A082199 A082190

Adjacent sequences:  A011929 A011930 A011931 * A011933 A011934 A011935

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified April 23 22:11 EDT 2014. Contains 240947 sequences.