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A156477 Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 22. 0
4, 84, 2772, 508190, 123856526, 64461381670, 82168021684448, 394312187045210712 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Table of n, a(n) for n=3..10.

CROSSREFS

Sequence in context: A053352 A322330 A270577 * A024259 A024260 A099706

Adjacent sequences:  A156474 A156475 A156476 * A156478 A156479 A156480

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 09 2009

STATUS

approved

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Last modified June 18 22:00 EDT 2021. Contains 345125 sequences. (Running on oeis4.)