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A265458
T(n,k)=Number of nXk 0..n+k-2 arrays with each element differing from its horizontal and vertical neighbors by one or two.
9
1, 2, 2, 12, 18, 12, 66, 250, 250, 66, 360, 3358, 7422, 3358, 360, 1864, 42282, 216466, 216466, 42282, 1864, 9358, 502154, 6056182, 13943772, 6056182, 502154, 9358, 45642, 5710302, 161435322, 871209026, 871209026, 161435322, 5710302, 45642
OFFSET
1,2
COMMENTS
Table starts
....1.......2.........12............66..............360................1864
....2......18........250..........3358............42282..............502154
...12.....250.......7422........216466..........6056182...........161435322
...66....3358.....216466......13943772........871209026.........52509347006
..360...42282....6056182.....871209026.....122895678174......16879041018070
.1864..502154..161435322...52509347006...16879041018070....5327856426356284
.9358.5710302.4148236142.3073046007824.2268041942592142.1653688201339124766
LINKS
EXAMPLE
Some solutions for n=3 k=4
..3..2..3..2....5..3..2..4....3..4..3..1....3..5..3..2....3..2..3..2
..2..3..2..0....3..2..0..2....2..3..2..3....5..3..5..3....2..4..2..3
..1..2..3..2....1..3..2..4....3..5..3..4....4..2..3..2....3..2..3..2
CROSSREFS
Sequence in context: A181813 A059187 A350329 * A054916 A194767 A302368
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin, Dec 09 2015
STATUS
approved