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A196911
Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,1,2,0,4 for x=0,1,2,3,4
1
13, 487, 10970, 280860, 7352954, 200038888, 5388703976, 145478400315, 3933296800409, 106294282176389, 2872553552092524, 77641656013643280, 2098667174973445583, 56728541446185446120, 1533438828790467176239
OFFSET
1,1
COMMENTS
Every 0 is next to 0 3's, every 1 is next to 1 1's, every 2 is next to 2 2's, every 3 is next to 3 0's, every 4 is next to 4 4's
Column 7 of A196912
LINKS
EXAMPLE
Some solutions for n=4
..0..0..0..0..0..1..1....0..0..1..1..0..0..1....0..0..0..0..0..0..0
..0..1..1..0..0..0..0....0..0..0..0..2..2..1....0..0..0..1..1..2..2
..0..0..0..1..2..2..0....1..0..1..1..2..2..0....0..0..0..0..0..2..2
..1..1..0..1..2..2..0....1..0..0..0..1..1..0....0..1..1..0..1..1..0
CROSSREFS
Sequence in context: A220560 A033983 A055412 * A197078 A116114 A281181
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 07 2011
STATUS
approved