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A300379
Number of nX7 0..1 arrays with every element equal to 0, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
1, 74, 131, 692, 6577, 53367, 481311, 4070089, 36505624, 319929622, 2837476138, 25246596055, 223898861023, 1988295398102, 17653104464628, 156742758122408, 1391761200734035, 12357651656612721, 109729025922860987
OFFSET
1,2
COMMENTS
Column 7 of A300380.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..1..0..0. .0..0..0..0..0..0..1. .0..1..1..0..1..0..0
..0..1..0..1..0..1..0. .0..1..0..1..0..1..1. .1..0..1..1..1..0..0
..0..0..0..0..1..1..0. .1..1..0..0..1..0..1. .1..1..0..0..1..1..1
..1..1..1..1..0..0..1. .0..0..1..0..1..1..0. .0..0..1..0..0..1..0
..1..0..1..0..0..1..1. .0..1..1..0..0..0..0. .0..1..1..0..0..0..0
CROSSREFS
Cf. A300380.
Sequence in context: A118221 A333100 A270340 * A300681 A309143 A365201
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 04 2018
STATUS
approved