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A250835
Number of (n+1)X(2+1) 0..2 arrays with no 2X2 subblock having a diagonal absolute difference less than its antidiagonal absolute difference
1
333, 4131, 51105, 633207, 7847629, 97259475, 1205380713, 14938857383, 185144548997, 2294587257555, 28437947447217, 352445463031871, 4368029914208605, 54135142508612971, 670923440009528025
OFFSET
1,1
COMMENTS
Column 2 of A250841
LINKS
FORMULA
Empirical: a(n) = 22*a(n-1) -157*a(n-2) +558*a(n-3) -1206*a(n-4) +1488*a(n-5) -112*a(n-6) -2242*a(n-7) +2090*a(n-8) -392*a(n-9) -32*a(n-10)
EXAMPLE
Some solutions for n=3
..0..0..2....1..2..1....1..2..2....2..0..1....1..2..0....2..2..2....1..1..1
..0..2..0....2..0..1....2..0..0....0..1..2....1..0..1....2..1..0....1..0..0
..1..1..0....1..1..0....0..1..1....2..2..0....0..2..2....0..1..0....0..0..2
..2..0..1....0..0..2....0..1..2....2..2..0....2..0..0....1..1..2....1..1..1
CROSSREFS
Sequence in context: A202311 A319011 A233030 * A221827 A158859 A367978
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 27 2014
STATUS
approved