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A232399
Number of (n+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal
0
4, 16, 52, 1120, 13532, 798692, 31802528, 5824262024, 752183288216, 442761087574020, 185196365472026896, 352995486371015148824
OFFSET
1,1
COMMENTS
Diagonal of A232406
EXAMPLE
Some solutions for n=4
..0..1..0..1..2....0..1..2..1..0....2..1..0..1..2....2..1..0..1..0
..1..2..1..2..1....1..2..1..0..1....1..0..1..0..1....1..2..1..2..1
..0..1..2..1..0....2..1..2..1..2....2..1..2..1..0....0..1..2..1..0
..1..2..1..2..1....1..0..1..0..1....1..0..1..2..1....1..0..1..0..1
..0..1..0..1..0....0..1..2..1..0....0..1..2..1..0....2..1..0..1..2
CROSSREFS
Sequence in context: A319775 A375307 A220936 * A223711 A074409 A056589
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 23 2013
STATUS
approved