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A238725
Number of nX7 0..2 arrays with no element equal to the sum modulo 3 of elements to its left or elements above it
1
16, 170, 2704, 24298, 359456, 3022230, 43248968, 354823094, 4990305568, 40601871406, 565368140984, 4590068472250, 63524027304400, 515796560253008, 7110064227756832, 57780149815277172, 794366012177843040
OFFSET
1,1
COMMENTS
Column 7 of A238726
LINKS
EXAMPLE
Some solutions for n=4
..2..1..1..2..2..1..1....1..2..2..1..2..1..1....2..1..1..2..1..2..1
..1..0..2..1..0..0..2....2..0..1..2..0..0..0....1..2..2..0..0..0..0
..1..0..2..1..0..0..2....1..0..2..2..0..0..0....1..2..1..0..2..1..0
..2..0..0..0..0..0..0....2..0..0..0..0..0..0....2..1..2..0..1..1..0
CROSSREFS
Sequence in context: A021424 A200673 A230510 * A221789 A018209 A021174
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 03 2014
STATUS
approved