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A156400 Number of 9 X 9 arrays of squares of integers, symmetric about the diagonal and under 90-degree rotation, with all rows summing to n. 0
1, 0, 0, 0, 18, 0, 0, 0, 0, 11, 0, 0, 64, 0, 0, 0, 42, 18, 0, 0, 42, 0, 0, 0, 72, 36, 0, 0, 0, 0, 0, 0, 96, 15, 0, 0, 257, 0, 0, 0, 120, 72, 0, 0, 240, 0, 0, 0, 172, 288, 0, 0, 204, 0, 0, 0, 216, 122, 0, 0, 0, 0, 0, 0, 138, 36, 0, 0, 1050, 0, 0, 0, 192, 294, 0, 0, 1320, 0, 0, 0, 186, 387, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..83.

CROSSREFS

Sequence in context: A187567 A160145 A072839 * A008424 A023920 A214359

Adjacent sequences:  A156397 A156398 A156399 * A156401 A156402 A156403

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 09 2009

STATUS

approved

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Last modified January 29 05:09 EST 2022. Contains 350672 sequences. (Running on oeis4.)