A156510 - OEIS

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A156510

Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 49.

0

1, 2, 10, 198, 10918, 2335392, 1569913286, 14728525914260, 599617717929388908

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..9.

CROSSREFS

Sequence in context: A194971 A155200 A264563 * A246532 A159558 A297066

Adjacent sequences: A156507 A156508 A156509 * A156511 A156512 A156513

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 09 2009

STATUS

approved