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A302726
Number of nX6 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1
5, 45, 162, 689, 4505, 20842, 104969, 623549, 3195095, 16779202, 94570299, 502818683, 2684335804, 14798497776, 79585694357, 428251526577, 2337808909399, 12622803157240, 68178468555088, 370527376656027, 2003864441765404
OFFSET
1,1
COMMENTS
Column 6 of A302728.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..1..0..0. .0..0..0..1..0..0. .0..1..1..0..1..1. .0..0..0..1..1..1
..1..0..0..0..1..1. .1..1..1..0..1..1. .0..0..1..0..0..1. .0..1..0..1..0..1
..1..0..1..0..1..0. .1..0..1..0..1..0. .1..0..1..0..1..0. .1..1..0..0..0..1
..0..1..1..0..0..0. .0..0..1..0..0..1. .1..1..1..1..0..0. .0..0..1..1..1..0
..0..0..1..0..0..0. .0..1..1..0..1..1. .0..0..0..0..1..1. .0..1..0..1..0..1
CROSSREFS
Cf. A302728.
Sequence in context: A288320 A003185 A302276 * A201876 A351426 A027801
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 12 2018
STATUS
approved