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A156501 Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 37. 0
2, 0, 50, 18, 13276, 76680, 40760544, 1759663680, 1948154942040 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,1
LINKS
CROSSREFS
Sequence in context: A009493 A009718 A198799 * A012420 A140800 A012694
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved

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Last modified February 27 15:39 EST 2024. Contains 370376 sequences. (Running on oeis4.)