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A302366
Number of nX7 0..1 arrays with every element equal to 0, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1
1, 496, 1109, 21831, 405340, 9361759, 188443738, 4174802035, 91302504318, 1990647394962, 43458424036759, 950882891683727, 20782195034545859, 454232197608277559, 9930143090303194255, 217079454443097601597
OFFSET
1,2
COMMENTS
Column 7 of A302367.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..0..0..1. .0..0..0..1..1..0..0. .0..0..1..0..0..1..1
..0..0..1..0..1..0..0. .0..0..1..1..1..0..0. .0..0..1..0..0..1..1
..1..0..1..1..0..0..1. .1..0..0..0..0..0..1. .0..1..1..1..1..1..1
..0..0..1..1..0..0..1. .1..0..0..1..0..0..0. .0..0..1..1..0..0..0
..0..0..1..1..0..0..0. .0..0..0..1..0..0..1. .1..0..0..0..0..0..0
CROSSREFS
Cf. A302367.
Sequence in context: A345351 A157447 A109477 * A303083 A302888 A349699
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 06 2018
STATUS
approved