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A230692
Number of (n+2)X(3+2) 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least two elements with value (x(i,j)+1) mod 3, and upper left element zero
1
21, 144, 9430, 442490, 18880359, 845419469, 37380126077, 1652305192566, 73119827289165, 3234539964921524, 143088660860878306, 6330053685562920899, 280030245168413301473, 12388059947078673447146, 548026781823813712246076
OFFSET
1,1
COMMENTS
Column 3 of A230694
LINKS
EXAMPLE
Some solutions for n=3
..0..1..0..1..2....0..1..0..1..2....0..1..1..0..2....0..1..1..0..1
..2..1..2..0..0....2..1..2..0..0....1..2..2..0..1....2..1..2..2..2
..0..2..2..1..2....0..2..1..1..2....0..2..1..2..1....1..0..0..0..1
..1..0..1..0..0....1..0..1..1..1....1..1..0..2..0....2..1..2..1..2
..2..0..2..1..2....2..0..0..2..0....0..2..1..2..1....0..1..0..1..0
CROSSREFS
Sequence in context: A301866 A377166 A101645 * A267992 A060493 A198183
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 27 2013
STATUS
approved