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A204746
Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly three ways, and new values 0..1 introduced in row major order
0
40, 46, 22, 32, 48, 74, 116, 184, 294, 472, 760, 1226, 1980, 3200, 5174, 8368, 13536, 21898, 35428, 57320, 92742, 150056, 242792, 392842
OFFSET
1,1
COMMENTS
Diagonal of A204754
EXAMPLE
Some solutions for n=6
..0..0..0..1..1..1..0..0....0..0..1..1..0..1..0..0....0..0..0..0..0..0..0..0
..1..0..0..0..1..1..1..0....0..0..1..1..0..1..0..0....0..0..0..0..0..0..0..0
..1..1..0..0..0..1..1..1....0..0..1..1..0..1..0..0....1..1..1..1..1..1..1..1
..1..1..1..0..0..0..1..1....0..0..1..1..0..1..0..0....0..0..0..0..0..0..0..0
..0..1..1..1..0..0..0..1....0..0..1..1..0..1..0..0....0..0..0..0..0..0..0..0
..0..0..1..1..1..0..0..0....0..0..1..1..0..1..0..0....1..1..1..1..1..1..1..1
..0..0..0..1..1..1..0..0....0..0..1..1..0..1..0..0....1..1..1..1..1..1..1..1
..1..0..0..0..1..1..1..0....0..0..1..1..0..1..0..0....0..0..0..0..0..0..0..0
CROSSREFS
Sequence in context: A364997 A046796 A333712 * A197734 A114839 A179435
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 18 2012
STATUS
approved