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A156524 Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 73. 0
2, 2, 102, 194, 52440, 367472, 1145093308, 43695620566 (list; graph; refs; listen; history; text; internal format)
OFFSET
2,1
LINKS
CROSSREFS
Sequence in context: A055470 A270591 A210467 * A194027 A003110 A100956
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved

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Last modified May 25 03:08 EDT 2024. Contains 372782 sequences. (Running on oeis4.)