

A252886


Number of (4+2)X(n+2) 0..2 arrays with every consecutive three elements in every row having 2 or 3 distinct values, in every column 1 or 2 distinct values, in every diagonal 2 distinct values, and in every antidiagonal 2 distinct values, and new values 0 upwards introduced in row major order


1



116455, 1284278, 16537346, 225544537, 3149891207, 44167941250, 621648578727, 8763434911242, 123590318373434, 1744386975870153, 24622988271070758, 347580473915148104, 4907368094866220731, 69285051181963251292
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OFFSET

1,1


COMMENTS



LINKS



EXAMPLE

Some solutions for n=1
..0..1..0....0..0..1....0..1..0....0..1..0....0..1..0....0..1..0....0..1..0
..0..2..2....1..1..2....0..0..1....1..2..2....0..2..2....2..0..1....2..1..0
..0..2..0....0..0..1....2..0..1....0..2..2....0..1..2....2..0..1....0..2..0
..0..2..2....0..1..1....0..2..1....1..2..2....2..1..1....1..0..2....0..1..0
..0..2..2....0..1..1....2..0..1....1..2..2....2..1..1....1..0..2....0..1..0
..1..0..0....0..2..1....0..2..1....0..0..1....0..1..2....2..2..1....1..2..1


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



