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A156398 Number of 9 X 9 arrays of squares of integers, symmetric about main diagonal, with all rows summing to n. 0
1, 2620, 708256, 24243520, 154294582, 253938600, 1164072896, 10953612400, 25250999564, 22620401127, 101930271184, 570443632816, 781505368112, 474109634808, 1937140499056, 9267607094192, 12532444401442, 7484174351906 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..17.

CROSSREFS

Sequence in context: A245008 A180330 A238921 * A139675 A292175 A295482

Adjacent sequences:  A156395 A156396 A156397 * A156399 A156400 A156401

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 09 2009

STATUS

approved

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Last modified December 6 17:58 EST 2021. Contains 349567 sequences. (Running on oeis4.)