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A301326
Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
1, 10, 18, 45, 143, 414, 1481, 5062, 17879, 62112, 217402, 764860, 2687915, 9462966, 33320851, 117384939, 413427418, 1456413781, 5131048829, 18077067261, 63688856231, 224392218311, 790594491334, 2785479832548, 9814065517891
OFFSET
1,2
COMMENTS
Column 4 of A301330.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1. .0..1..0..1. .0..1..1..1. .0..0..0..0. .0..1..0..0
..0..1..0..0. .1..1..1..1. .1..1..0..1. .0..1..0..0. .1..1..0..0
..0..0..1..0. .0..0..0..0. .1..1..1..0. .1..1..1..1. .0..1..1..1
..1..1..1..0. .0..1..0..0. .0..0..1..1. .0..0..1..1. .1..0..1..0
..1..1..0..0. .0..0..0..1. .0..0..1..1. .0..1..1..0. .1..1..0..0
CROSSREFS
Cf. A301330.
Sequence in context: A007938 A007937 A300601 * A350317 A255603 A291931
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 18 2018
STATUS
approved