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A317862
Number of nX7 0..1 arrays with every element unequal to 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
8, 102, 164, 851, 2616, 9045, 33238, 116271, 405766, 1489264, 5416535, 20000458, 73575709, 273375552, 1015670766, 3790505262, 14158662304, 52983894317, 198495708632, 744119241519, 2791930147584, 10479343979306, 39350143779387
OFFSET
1,1
COMMENTS
Column 7 of A317863.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..0..0..1..0. .0..0..1..0..0..1..0. .0..1..1..0..1..0..0
..1..1..1..0..0..0..0. .1..0..0..0..1..1..0. .1..1..1..1..1..0..1
..1..0..0..1..0..1..0. .0..0..0..0..0..0..1. .0..1..1..1..1..1..1
..0..1..1..1..1..1..0. .0..1..1..0..0..0..0. .1..0..0..1..1..1..0
..0..1..1..0..1..1..0. .0..1..0..0..1..0..1. .1..0..1..1..0..1..1
CROSSREFS
Cf. A317863.
Sequence in context: A229452 A199816 A302870 * A318551 A307461 A318213
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 09 2018
STATUS
approved