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A156485 Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 26. 0
2, 0, 96, 88, 9866, 64560, 10075588, 176105168, 80948165500, 4500246590912 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..11.

CROSSREFS

Sequence in context: A136559 A009740 A132860 * A009270 A033838 A181373

Adjacent sequences:  A156482 A156483 A156484 * A156486 A156487 A156488

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 09 2009

STATUS

approved

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Last modified April 27 06:52 EDT 2017. Contains 285508 sequences.