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A199352
Number of nX3 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to zero or one horizontal or vertical neighbors
1
1, 45, 930, 7945, 808721, 36379420, 821116806, 7583425311, 911983726469, 45130187288722, 1066404844359923, 10007712190029813, 1299200253416601860, 67226145153865158217, 1626281528857502520213, 15397791355704316162481
OFFSET
1,2
COMMENTS
Column 3 of A199356
LINKS
EXAMPLE
Some solutions for n=4
..0..1..2....0..1..2....0..1..2....0..1..1....0..1..0....0..1..0....0..0..1
..3..3..2....2..3..1....2..1..2....1..0..2....1..2..0....2..3..1....2..3..2
..2..1..3....2..0..3....3..0..1....3..2..3....2..3..3....1..2..0....3..1..2
..0..0..1....1..0..3....3..0..3....2..3..0....3..2..1....2..3..3....1..0..3
CROSSREFS
Sequence in context: A341573 A078761 A034967 * A195466 A010961 A271795
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 05 2011
STATUS
approved