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A320370
Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
64, 8192, 569608, 37398884, 2486026176, 165355751224, 10993944343316, 731023916987668, 48608312646628816, 3232138361835207448, 214916439617787409844, 14290565387888543489420, 950231025365163583436224
OFFSET
1,1
COMMENTS
Column 7 of A320371.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..1..0..1. .0..0..0..0..0..1..1. .0..0..0..0..0..1..0
..0..0..0..0..0..0..0. .0..0..0..0..1..1..1. .0..0..0..0..0..0..1
..0..0..0..0..1..0..0. .0..0..0..0..1..0..0. .0..0..0..1..1..1..0
..0..0..0..1..1..0..1. .0..0..0..0..0..0..0. .0..0..0..1..1..1..0
..0..0..0..0..0..0..1. .0..0..0..0..1..1..0. .0..0..0..1..0..0..0
CROSSREFS
Cf. A320371.
Sequence in context: A208714 A316959 A316814 * A298969 A317564 A299739
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 11 2018
STATUS
approved