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A196981
Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,2,1,0,4 for x=0,1,2,3,4
1
9, 803, 31386, 1272373, 53216978, 2188092870, 90401915964, 3740738215983, 154705956361411, 6393070820268590, 264219149718966451, 10923404535101323602, 451574917966470461834, 18666476210321258568728
OFFSET
1,1
COMMENTS
Every 0 is next to 0 3'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 4's
Column 7 of A196982
LINKS
EXAMPLE
Some solutions for n=4
..0..0..0..1..0..0..0....0..0..0..0..0..1..0....0..0..1..0..1..2..0
..0..0..0..2..1..0..0....0..0..1..2..0..2..1....0..0..2..2..1..1..1
..0..1..1..2..1..1..2....2..1..1..1..0..2..1....0..1..1..1..0..0..2
..1..2..0..0..0..0..1....1..0..2..1..0..1..0....0..2..1..1..2..1..1
CROSSREFS
Sequence in context: A137065 A272853 A332179 * A197166 A015025 A225169
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 08 2011
STATUS
approved