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A156500 Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 37. 0
2, 6, 110, 4146, 819560, 482038068, 1640436725312, 24866331300024792 (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: A216151 A057771 A056164 * A264889 A231537 A303441

Adjacent sequences:  A156497 A156498 A156499 * A156501 A156502 A156503

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 09 2009

STATUS

approved

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Last modified July 28 03:49 EDT 2021. Contains 346316 sequences. (Running on oeis4.)