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A109764 Sum of the first n^2 squares. 0
0, 14, 204, 1240, 4900, 14910, 38024, 85344, 173880, 328350, 583220, 984984, 1594684, 2490670, 3771600, 5559680, 8004144, 11284974, 15616860, 21253400, 28491540, 37676254, 49205464, 63535200, 81185000, 102743550, 128874564 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
LINKS
FORMULA
a(n) = n^2*(n^2-1)*(2*n^2-1)/6. G.f.: 2*x^2*(1+x)*(7*x^2+46*x+7)/(1-x)^7. [From R. J. Mathar, Jun 28 2010]
PROG
(PARI) for(j=1, 50, print1(sum(i=0, j^2-1, i^2), ", ")) (Klasen)
CROSSREFS
Sequence in context: A221830 A068769 A113349 * A349283 A333949 A002961
KEYWORD
easy,nonn
AUTHOR
Giovanni Teofilatto, Aug 13 2005
STATUS
approved

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)