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A156480
Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 24.
0
2, 22, 64, 3923, 32236, 10001476, 183254724, 94893077616, 3439098945960
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OFFSET
3,1
LINKS
Table of n, a(n) for n=3..11.
CROSSREFS
Sequence in context:
A152995
A273366
A053940
*
A348488
A226406
A226335
Adjacent sequences:
A156477
A156478
A156479
*
A156481
A156482
A156483
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.)