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A253612
Number of (n+2)X(2+2) 0..2 arrays with every consecutive three elements in every row and diagonal having one or two distinct values, and in every column and antidiagonal having two or three distinct values, and new values 0 upwards introduced in row major order
1
6916, 131378, 2501365, 48041910, 920906077, 17665509894, 338854514523, 6500005331011, 124684145636827, 2391719505327311, 45878483658735443, 880051229318868232, 16881337031496800473, 323821540743313385720
OFFSET
1,1
COMMENTS
Column 2 of A253615
LINKS
EXAMPLE
Some solutions for n=2
..0..0..0..0....0..0..1..1....0..1..0..0....0..1..0..0....0..1..1..0
..1..0..0..1....2..2..1..2....2..2..2..1....2..2..1..2....1..2..1..2
..2..1..2..1....1..0..0..1....0..2..2..2....2..0..2..0....2..0..2..2
..2..2..2..2....0..0..0..2....1..0..0..0....0..0..0..2....0..1..0..0
CROSSREFS
Sequence in context: A272913 A230468 A186059 * A004243 A004244 A253736
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 05 2015
STATUS
approved