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A298258
Number of nX7 0..1 arrays with every element equal to 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.
1
0, 34, 14, 201, 604, 3335, 13991, 70095, 331341, 1644480, 8037526, 39760955, 194961246, 961041475, 4728481549, 23295012230, 114728093511, 565337326343, 2784889510658, 13721663522023, 67604705716170, 333094024429888
OFFSET
1,2
COMMENTS
Column 7 of A298259.
LINKS
EXAMPLE
Some solutions for n=8
..0..0..0..0..0..1..1. .0..0..0..0..0..1..1. .0..0..0..0..0..0..0
..0..1..1..0..1..0..1. .0..1..1..1..1..0..1. .0..1..1..1..1..1..0
..1..1..0..1..0..0..1. .1..0..0..0..1..0..1. .0..1..0..0..0..0..1
..1..0..1..0..0..1..1. .0..1..1..0..1..0..1. .0..0..1..1..1..1..0
..0..1..0..0..1..0..0. .0..1..0..1..1..0..1. .0..1..0..0..1..0..0
..0..1..0..0..1..1..0. .0..0..1..0..1..0..1. .0..1..1..0..1..1..0
..1..0..0..1..0..0..1. .1..0..0..1..0..0..1. .1..0..0..0..0..1..0
..1..1..1..1..0..1..1. .1..1..1..1..1..1..1. .1..1..1..1..1..0..0
CROSSREFS
Cf. A298259.
Sequence in context: A071788 A220133 A300101 * A298929 A118497 A301826
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 15 2018
STATUS
approved