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A159427
Number of n X n arrays of squares of integers summing to 31.
1
16, 23940, 31055264, 56984666900, 114284417160312, 213192020334650392, 326970188846941423616, 372952836753917837693688, 291646801111986700992582600, 147608592254559524130988994532
OFFSET
2,1
LINKS
Vaclav Kotesovec, G.f. for A159427
FORMULA
G.f.: see link above. - Vaclav Kotesovec, Dec 04 2012
CROSSREFS
Sequence in context: A168488 A070904 A308309 * A340590 A017416 A265618
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 11 2009
STATUS
approved