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A207479
T(n,k)=Number of nXk 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column or nw-se diagonal
7
4, 16, 16, 58, 256, 58, 214, 3364, 3364, 214, 788, 45796, 133556, 45796, 788, 2902, 620944, 5632964, 5632964, 620944, 2902, 10686, 8421604, 236422326, 768149650, 236422326, 8421604, 10686, 39350, 114190596, 9918542118, 103954441786
OFFSET
1,1
COMMENTS
Table starts
.....4.........16.............58................214....................788
....16........256...........3364..............45796.................620944
....58.......3364.........133556............5632964..............236422326
...214......45796........5632964..........768149650...........103954441786
...788.....620944......236422326.......103954441786.........45141978255552
..2902....8421604.....9918542118.....14048417801822......19555176286561332
.10686..114190596...415949940602...1897778216001770....8467264566580418754
.39350.1548422500.17445552068794.256411488632156454.3667158147033103349794
LINKS
EXAMPLE
Some solutions for n=4 k=3
..2..1..3....2..2..1....3..1..1....0..1..1....0..2..0....2..0..1....0..3..3
..3..0..1....0..0..3....1..3..3....3..3..0....3..0..0....0..2..0....0..1..3
..3..0..0....0..0..1....3..1..3....3..1..2....2..1..1....1..2..2....2..1..1
..1..3..0....1..1..3....1..3..3....3..2..1....0..2..1....3..0..0....2..1..1
CROSSREFS
Column 1 is A207276
Column 2 is A207277
Sequence in context: A232516 A220109 A207283 * A207535 A269194 A269143
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Feb 18 2012
STATUS
approved