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A208408
T(n,k)=Number of nXk 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors
14
1, 2, 2, 5, 15, 5, 15, 182, 187, 15, 51, 2698, 10682, 2795, 51, 187, 41914, 658450, 667478, 43947, 187, 715, 658450, 40883360, 163422914, 42012698, 700075, 715, 2795, 10370330, 2540446156, 40039156736, 40595679634, 2646531062, 11188907, 2795
OFFSET
1,2
COMMENTS
Table starts
....1.........2..............5.................15......................51
....2........15............182...............2698...................41914
....5.......187..........10682.............658450................40883360
...15......2795.........667478..........163422914.............40039156736
...51.....43947.......42012698........40595679634..........39216100214432
..187....700075.....2646531062.....10084768380770.......38410047476679936
..715..11188907...166729574522...2505261257850802....37620564383817645696
.2795.178973355.10503950018198.622357842865595522.36847308431734650845696
LINKS
EXAMPLE
Some solutions for n=4 k=3
..0..0..0....0..0..1....0..1..0....0..0..0....0..1..0....0..0..0....0..1..1
..0..1..0....0..0..0....0..2..2....0..1..1....0..2..3....0..1..2....0..0..0
..1..2..1....0..1..1....1..2..1....2..0..2....3..0..0....2..1..1....0..1..1
..0..1..3....1..2..3....1..3..2....2..1..0....2..1..3....0..1..1....0..2..1
CROSSREFS
Row 1 and column 1 are A007581(n-1)
Sequence in context: A208001 A200801 A241119 * A198528 A208466 A098888
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Feb 26 2012
STATUS
approved