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A269199
Number of nX6 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three no more than once.
1
2592, 472044, 84310620, 13753913556, 2135938293684, 320994710282892, 47121391706947500, 6796525936086462132, 966936595386067680804, 136062368474581143710892, 18974537404982889834704892
OFFSET
1,1
COMMENTS
Column 6 of A269201.
FORMULA
Empirical recurrence of order 42 (see link above)
EXAMPLE
Some solutions for n=2
..0..0..0..2..0..1. .0..0..1..3..1..3. .0..3..2..0..0..2. .0..2..0..2..2..2
..0..0..2..0..2..2. .2..0..2..1..1..3. .2..0..2..0..0..0. .0..1..0..0..3..3
CROSSREFS
Cf. A269201.
Sequence in context: A269192 A033695 A269141 * A269107 A035773 A107569
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 20 2016
STATUS
approved