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A187464
Number of 4X4 0..n arrays with all the 2X2 subblocks nonsingular and the array of 2X2 subblock determinants symmetric
0
144, 89618, 5098224, 100936174, 1061948616, 7706500654, 41131010240, 180898687166, 670434819776, 2192125079476, 6398465414348, 17262285779402
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OFFSET
1,1
COMMENTS
Row 3 of A187462
LINKS
Table of n, a(n) for n=1..12.
CROSSREFS
Sequence in context: A130118 A288909 A187169 * A221735 A272462 A217339
Adjacent sequences: A187461 A187462 A187463 * A187465 A187466 A187467
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 10 2011
STATUS
approved

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Last modified November 16 05:03 EST 2024. Contains 377779 sequences.
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