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A255775
Number of (n+2)X(n+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 1 and no row sum 0 and no column sum 0
0
140, 1743, 58729, 2413487, 193188995, 32105186518, 9007582907953, 4590560094334298, 4477200560643502537, 7835100506995593159086
OFFSET
1,1
COMMENTS
Diagonal of A255783
EXAMPLE
Some solutions for n=3
..0..1..1..1..0....0..1..1..0..1....0..1..1..0..1....1..1..0..1..0
..0..1..1..1..0....0..1..1..1..1....1..1..1..1..1....1..0..1..1..0
..1..1..1..1..1....1..1..1..1..1....0..1..1..1..1....0..1..1..1..1
..1..1..1..1..1....1..0..1..1..1....1..1..1..0..1....0..0..1..1..1
..1..1..1..1..1....1..0..1..0..1....0..1..1..0..1....1..1..0..0..1
CROSSREFS
Sequence in context: A317984 A133711 A184377 * A199831 A264310 A128193
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 06 2015
STATUS
approved