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A156424 Number of 17 X 17 arrays of squares of integers, symmetric about the diagonal and under 90 degree rotation, with all rows summing to n. 0
1, 0, 0, 0, 66178, 0, 0, 0, 7777280, 0, 0, 0, 73938288, 0, 0, 0, 1262896895, 89959563, 0, 0, 5559809528, 0, 0, 0, 30866580416, 991288522, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,5
LINKS
CROSSREFS
Sequence in context: A253797 A241978 A212583 * A092376 A251333 A157620
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.)