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A297873
Number of nX5 0..1 arrays with every element equal to 2, 3 or 5 king-move adjacent elements, with upper left element zero.
1
0, 11, 0, 20, 80, 231, 579, 2437, 7507, 26278, 91622, 316406, 1091518, 3805139, 13166620, 45743807, 158968332, 552175778, 1918002602, 6665774473, 23158033370, 80468332463, 279615402191, 971597706573, 3376114511226, 11731585710994
OFFSET
1,2
COMMENTS
Column 5 of A297876.
LINKS
EXAMPLE
Some solutions for n=7
..0..0..1..0..0. .0..0..1..0..0. .0..0..0..1..1. .0..1..1..1..0
..0..1..1..1..0. .0..1..1..1..0. .0..1..1..0..1. .0..0..1..0..0
..0..1..0..1..0. .1..0..0..0..1. .1..1..0..0..1. .0..1..1..0..1
..0..0..1..0..0. .0..1..1..1..0. .1..0..1..1..0. .1..0..0..1..1
..1..1..1..1..1. .1..0..0..0..1. .0..0..1..0..0. .1..1..1..0..1
..0..1..1..0..1. .0..1..1..1..0. .1..0..1..0..1. .1..0..1..0..1
..0..0..1..0..0. .0..0..1..0..0. .1..1..0..1..1. .0..0..0..1..1
CROSSREFS
Cf. A297876.
Sequence in context: A087557 A186072 A299780 * A298136 A334370 A274851
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 07 2018
STATUS
approved