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A156463 Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 16. 0
1, 2, 4, 11, 347, 38042, 12496449, 9230231522, 12532444401442, 31544855681886910 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..10.

CROSSREFS

Sequence in context: A198864 A038093 A057284 * A227530 A218129 A156519

Adjacent sequences: A156460 A156461 A156462 * A156464 A156465 A156466

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 09 2009

STATUS

approved

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Last modified February 8 06:05 EST 2023. Contains 360134 sequences. (Running on oeis4.)