

A198184


Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,0,0 for x=0,1,2,3,4


1



3, 56, 395, 3485, 48958, 395340, 4522496, 41084248, 441157382, 4292509761, 44051823241, 438360876506, 4438621935572, 44610898968447, 449562512780134, 4527350842044875, 45564682527974566, 459054827920170371
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OFFSET

1,1


COMMENTS

Every 0 is next to 0 0's, every 1 is next to 1 2's, every 2 is next to 2 1's, every 3 is next to 3 0's, every 4 is next to 4 0's


LINKS



EXAMPLE

Some solutions containing all values 0 to 4 for n=4
..1..2..1..0..1..1..0....2..1..0..3..0..3..0....1..0..3..0..3..0..1
..0..3..0..1..2..2..1....1..0..1..0..4..0..3....2..1..0..4..0..3..2
..1..0..4..0..3..0..1....1..2..2..3..0..3..0....0..1..3..0..3..0..1
..2..1..0..3..0..1..2....0..1..1..0..1..2..1....1..2..0..1..2..1..0


CROSSREFS



KEYWORD

nonn


AUTHOR



STATUS

approved



