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A198407
Number of 2nX6 0..4 arrays with values 0..4 introduced in row major order and each element equal to exactly one horizontal and vertical neighbor
0
377, 5057327, 85013617830, 1506130430723528, 27330079651426584414
OFFSET
1,1
COMMENTS
Column 3 of A198408
EXAMPLE
Some solutions for n=2
..0..1..0..0..1..2....0..1..0..1..2..0....0..1..0..2..2..3....0..1..0..0..2..2
..0..1..2..2..1..2....0..1..0..1..2..0....0..1..0..4..4..3....0..1..3..3..1..1
..1..3..0..3..0..0....1..3..3..2..0..3....1..4..4..2..3..1....1..0..0..4..4..3
..1..3..0..3..1..1....1..4..4..2..0..3....1..0..0..2..3..1....1..3..3..1..1..3
CROSSREFS
Sequence in context: A222350 A277942 A241908 * A003918 A350183 A045197
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 24 2011
STATUS
approved