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A156454
Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 11.
0
2, 22, 48, 1568, 9108, 459944, 3924896, 332810880, 3867308971, 659368209568, 11298978667872, 4499416656998240
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OFFSET
3,1
LINKS
Table of n, a(n) for n=3..14.
CROSSREFS
Sequence in context: A306969 A200946 A322157 * A168669 A271883 A152995
Adjacent sequences: A156451 A156452 A156453 * A156455 A156456 A156457
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved

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Last modified October 5 13:23 EDT 2024. Contains 376546 sequences.
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