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A297958
Number of nX7 0..1 arrays with every element equal to 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.
1
8, 99, 245, 2359, 11623, 61204, 483929, 2884282, 18478260, 127847471, 829387894, 5485155575, 36667835017, 242733743793, 1613325886315, 10720998638200, 71201535319957, 473312060554166, 3144232961120243, 20890896841356141
OFFSET
1,1
COMMENTS
Column 7 of A297959.
LINKS
EXAMPLE
Some solutions for n=6
..0..1..0..1..1..0..1. .0..0..1..0..1..1..0. .0..1..0..0..1..1..1
..0..1..0..0..0..1..1. .1..1..1..0..0..1..0. .0..1..1..1..1..1..0
..1..0..0..0..1..0..0. .1..0..1..1..1..1..0. .1..0..1..0..0..0..1
..0..0..1..1..1..1..1. .0..0..1..0..1..0..1. .1..0..1..1..0..0..1
..1..1..0..0..1..0..1. .0..0..1..1..0..0..0. .1..0..1..1..0..1..0
..1..0..1..0..1..0..0. .0..1..0..1..0..1..1. .1..0..1..0..0..1..0
CROSSREFS
Cf. A297959.
Sequence in context: A366035 A211869 A159232 * A298774 A298581 A299573
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 09 2018
STATUS
approved