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A156517 Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 58. 0
2, 6, 198, 20472, 11458140, 15139474872, 64914837681442, 1549731064209250952 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..9.

CROSSREFS

Sequence in context: A055696 A158096 A302344 * A091439 A285102 A285101

Adjacent sequences:  A156514 A156515 A156516 * A156518 A156519 A156520

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 09 2009

STATUS

approved

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Last modified July 16 23:49 EDT 2019. Contains 325092 sequences. (Running on oeis4.)