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Search: id:A099761
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A099761 a(n) = (n(n+2))^2. +0
1
0, 9, 64, 225, 576, 1225, 2304, 3969, 6400, 9801, 14400, 20449, 28224, 38025, 50176, 65025, 82944, 104329, 129600, 159201, 193600, 233289, 278784, 330625, 389376, 455625, 529984, 613089, 705600, 808201, 921600, 1046529, 1183744, 1334025 (list; graph; listen)
OFFSET

0,2

FORMULA

(n^2-1)^2 - Artur Jasinski (grafix(AT)csl.pl), Aug 15 2007

MAPLE

a:=n->sum(sum(n^2, j=3..n), k=3..n): seq(a(n), n=2..35); - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), May 09 2007

MATHEMATICA

Table[(1 - 2 a^2 + a^4), {a, 1, 100}] - Artur Jasinski (grafix(AT)csl.pl), Aug 15 2007

CROSSREFS

Adjacent sequences: A099758 A099759 A099760 this_sequence A099762 A099763 A099764

Sequence in context: A065025 A050792 A016886 this_sequence A092396 A018201 A000444

KEYWORD

easy,nonn

AUTHOR

Kari Lajunen (Kari.Lajunen(AT)Welho.com), Nov 11 2004

page 1

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Last modified October 7 14:39 EDT 2008. Contains 144666 sequences.


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