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A117665 n times the n-th n-gonal number. 1
0, 2, 6, 24, 80, 210, 462, 896, 1584, 2610, 4070, 6072, 8736, 12194, 16590, 22080, 28832, 37026, 46854, 58520, 72240, 88242, 106766, 128064, 152400, 180050, 211302, 246456, 285824, 329730, 378510, 432512, 492096, 557634, 629510, 708120, 793872 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

a(n) = n((n(n-2)^2+n^2)/2)

CROSSREFS

Cf. A060354.

Sequence in context: A147929 A147921 A002526 * A068777 A095110 A189858

Adjacent sequences:  A117662 A117663 A117664 * A117666 A117667 A117668

KEYWORD

nonn

AUTHOR

Luc Stevens (lms022(AT)yahoo.com), Apr 11 2006

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Last modified February 17 23:38 EST 2012. Contains 206085 sequences.