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A255226
Number of (n+2)X(6+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 2 and no column sum 2
1
88, 94, 103, 115, 133, 160, 199, 256, 340, 463, 643, 907, 1294, 1861, 2692, 3910, 5695, 8311, 12145, 17764, 25999, 38068, 55756, 81679, 119671, 175351, 256954, 376549, 551824, 808702, 1185175, 1736923, 2545549, 3730648, 5467495, 8012968, 11743540
OFFSET
1,1
COMMENTS
Column 6 of A255228
LINKS
FORMULA
Empirical: a(n) = 2*a(n-1) -a(n-2) +a(n-3) -a(n-4)
EXAMPLE
Some solutions for n=4
..1..1..1..1..1..1..1..1....1..1..1..1..1..1..1..1....0..0..1..0..0..0..0..1
..0..0..1..0..0..1..0..0....1..0..0..0..1..0..0..1....0..0..1..0..0..0..0..1
..0..0..1..0..0..1..0..0....1..0..0..0..1..0..0..1....1..1..1..1..1..1..1..1
..0..0..1..0..0..1..0..0....1..1..1..1..1..1..1..1....0..0..1..0..0..0..0..1
..1..1..1..1..1..1..1..1....1..0..0..0..1..0..0..1....0..0..1..0..0..0..0..1
..0..0..1..0..0..1..0..0....1..0..0..0..1..0..0..1....1..1..1..1..1..1..1..1
CROSSREFS
Sequence in context: A147317 A143846 A361105 * A241491 A356368 A068356
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 17 2015
STATUS
approved