login
A305045
Number of nX6 0..1 arrays with every element unequal to 0, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.
2
1, 49, 17, 17, 201, 137, 42, 5165, 6357, 5846, 188507, 395242, 807954, 8663043, 25748810, 74038793, 473267062, 1684410691, 5713158552, 28622444576, 110454531459, 407922983655, 1823045922549, 7269915840634, 28075575562716
OFFSET
1,2
COMMENTS
Column 6 of A305047.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..0..1..0. .0..1..0..0..1..0. .0..1..0..1..1..0. .0..1..1..0..0..1
..1..1..0..1..0..1. .1..0..1..1..0..1. .1..1..0..0..1..0. .0..1..0..0..1..0
..1..0..1..1..1..1. .1..1..1..1..1..1. .0..0..0..0..0..0. .0..0..0..0..0..0
..1..0..1..1..0..1. .1..0..1..1..0..1. .0..1..0..0..1..0. .1..1..0..0..1..1
..0..1..1..0..0..1. .0..1..0..0..1..0. .1..0..1..1..0..1. .0..1..0..0..1..0
CROSSREFS
Cf. A305047.
Sequence in context: A218167 A145583 A304139 * A065787 A033369 A236247
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 24 2018
STATUS
approved