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A079414 a(n) = 4n^4 - 3n^2. 1
1, 52, 297, 976, 2425, 5076, 9457, 16192, 26001, 39700, 58201, 82512, 113737, 153076, 201825, 261376, 333217, 418932, 520201, 638800, 776601, 935572, 1117777, 1325376, 1560625, 1825876, 2123577, 2456272, 2826601, 3237300 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n) = n * sum_{k=0 to n-1} (-1)^k (2n-2k-1)^3

a(n+1) = (n+1) * ((2n+1)^3 - a(n)/n)

LINKS

Table of n, a(n) for n=1..30.

CROSSREFS

Sequence in context: A230533 A235654 A118328 * A232903 A232404 A005946

Adjacent sequences:  A079411 A079412 A079413 * A079415 A079416 A079417

KEYWORD

nonn

AUTHOR

Kit Vongmahadlek (kit119(AT)yahoo.com), Jan 07 2003

EXTENSIONS

Edited by Don Reble (djr(AT)nk.ca), Nov 02 2005

STATUS

approved

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Last modified November 28 17:44 EST 2014. Contains 250367 sequences.