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A156492
Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 32.
0
1, 2, 10, 30, 6308, 74688, 40816519, 721196432, 813786222831
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OFFSET
2,2
LINKS
Table of n, a(n) for n=2..10.
CROSSREFS
Sequence in context:
A371484
A268688
A281069
*
A297467
A305011
A090809
Adjacent sequences:
A156489
A156490
A156491
*
A156493
A156494
A156495
KEYWORD
nonn
AUTHOR
R. H. Hardin
Feb 09 2009
STATUS
approved
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Last modified April 19 23:15 EDT 2024. Contains 371798 sequences. (Running on oeis4.)