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A197341
Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,2,1,2 for x=0,1,2,3,4
1
1, 73, 856, 12148, 159818, 2218128, 30771790, 425710602, 5901225887, 81906890563, 1136740659494, 15777299597218, 219003011443420, 3040043574547156, 42200212094991310, 585805173715282824, 8131923948348934992
OFFSET
1,2
COMMENTS
Every 0 is next to 0 3's, every 1 is next to 1 3's, every 2 is next to 2 2's, every 3 is next to 3 1's, every 4 is next to 4 2's
Column 7 of A197342
LINKS
EXAMPLE
Some solutions containing all values 0 to 4 for n=4
..2..2..2..0..1..3..1....0..0..2..2..2..0..1....2..2..2..0..1..3..1
..2..4..2..2..0..1..0....0..2..2..0..2..1..3....2..4..2..1..0..1..0
..2..2..4..2..0..1..0....0..2..4..2..2..0..1....2..2..2..3..1..0..0
..0..2..2..2..1..3..1....0..2..2..2..0..0..0....0..0..0..1..0..0..0
CROSSREFS
Sequence in context: A272768 A100412 A169830 * A104907 A296024 A254136
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 13 2011
STATUS
approved