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A255225
Number of (n+2)X(5+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
61, 67, 76, 88, 106, 133, 172, 229, 313, 436, 616, 880, 1267, 1834, 2665, 3883, 5668, 8284, 12118, 17737, 25972, 38041, 55729, 81652, 119644, 175324, 256927, 376522, 551797, 808675, 1185148, 1736896, 2545522, 3730621, 5467468, 8012941, 11743513
OFFSET
1,1
COMMENTS
Column 5 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
..0..1..0..0..0..1..0....1..0..0..1..0..0..1....0..1..0..0..1..0..0
..0..1..0..0..0..1..0....1..0..0..1..0..0..1....1..1..1..1..1..1..1
..1..1..1..1..1..1..1....1..0..0..1..0..0..1....0..1..0..0..1..0..0
..0..1..0..0..0..1..0....1..0..0..1..0..0..1....0..1..0..0..1..0..0
..0..1..0..0..0..1..0....1..0..0..1..0..0..1....0..1..0..0..1..0..0
..1..1..1..1..1..1..1....1..1..1..1..1..1..1....1..1..1..1..1..1..1
CROSSREFS
Sequence in context: A014753 A349461 A316933 * A141167 A062673 A284291
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 17 2015
STATUS
approved