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A156512
Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 50.
0
3, 22, 474, 21676, 6117690, 8086830378, 27448134968478, 351300513333271976
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OFFSET
2,1
LINKS
Table of n, a(n) for n=2..9.
CROSSREFS
Sequence in context:
A271849
A271850
A364844
*
A119770
A272659
A233748
Adjacent sequences:
A156509
A156510
A156511
*
A156513
A156514
A156515
KEYWORD
nonn
AUTHOR
R. H. Hardin
Feb 09 2009
STATUS
approved
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Last modified August 10 14:52 EDT 2024. Contains 375056 sequences. (Running on oeis4.)