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A156467
Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 17.
0
2, 2, 44, 76, 1804, 8172, 1022492, 7436362, 4686068520, 71763897760, 74820160016800
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OFFSET
2,1
LINKS
Table of n, a(n) for n=2..12.
CROSSREFS
Sequence in context: A348226 A280061 A349602 * A303538 A222661 A015167
Adjacent sequences: A156464 A156465 A156466 * A156468 A156469 A156470
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 09 2009
STATUS
approved

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Last modified November 8 01:15 EST 2024. Contains 377537 sequences.
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