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A156425 Number of 17 X 17 arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to n. 0
1, 1680, 0, 0, 320743643010, 10058239033920, 0, 0, 16657062087640520, 62993444371397120, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
CROSSREFS
Sequence in context: A339960 A252442 A159625 * A247853 A093787 A258920
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 09 2009
STATUS
approved

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Last modified June 19 09:37 EDT 2024. Contains 373501 sequences. (Running on oeis4.)