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A156451
Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 10.
0
2, 6, 60, 972, 56610, 4465916, 541808498, 101930271184, 39015704748255, 40748977102642818
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OFFSET
2,1
LINKS
Table of n, a(n) for n=2..11.
CROSSREFS
Sequence in context:
A180402
A338600
A089039
*
A152617
A156472
A108640
Adjacent sequences:
A156448
A156449
A156450
*
A156452
A156453
A156454
KEYWORD
nonn
AUTHOR
R. H. Hardin
Feb 09 2009
STATUS
approved
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Last modified August 30 17:11 EDT 2024. Contains 375545 sequences. (Running on oeis4.)