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A255224
Number of (n+2)X(4+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
43, 49, 58, 70, 88, 115, 154, 211, 295, 418, 598, 862, 1249, 1816, 2647, 3865, 5650, 8266, 12100, 17719, 25954, 38023, 55711, 81634, 119626, 175306, 256909, 376504, 551779, 808657, 1185130, 1736878, 2545504, 3730603, 5467450, 8012923, 11743495
OFFSET
1,1
COMMENTS
Column 4 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..0..1..0..0..1....1..1..1..1..1..1....0..0..1..0..0..0....0..1..0..0..1..0
..0..0..1..0..0..1....1..0..0..0..0..0....0..0..1..0..0..0....0..1..0..0..1..0
..0..0..1..0..0..1....1..0..0..0..0..0....1..1..1..1..1..1....0..1..0..0..1..0
..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..0..1..0..0..1....1..0..0..0..0..0....0..0..1..0..0..0....0..1..0..0..1..0
..0..0..1..0..0..1....1..0..0..0..0..0....1..1..1..1..1..1....1..1..1..1..1..1
CROSSREFS
Sequence in context: A118485 A165444 A162464 * A161406 A373679 A128653
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 17 2015
STATUS
approved