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A297864
Number of nX6 0..1 arrays with every element equal to 2, 3 or 4 king-move adjacent elements, with upper left element zero.
1
0, 25, 222, 1052, 21519, 284344, 3740362, 52727368, 711614693, 9830071754, 134957151331, 1851435077345, 25452957854923, 349571109226366, 4802011704262362, 65968126409569608, 906203504992390038
OFFSET
1,2
COMMENTS
Column 6 of A297866.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..0..0. .0..0..0..0..1..1. .0..0..0..1..0..0. .0..0..1..1..0..0
..0..1..1..1..1..0. .0..1..1..1..0..1. .0..1..1..0..1..0. .0..1..0..1..0..0
..0..1..0..0..1..0. .0..1..0..0..1..1. .1..0..0..1..0..1. .1..1..0..0..1..1
..0..1..1..0..1..0. .0..1..0..1..0..0. .0..1..0..0..1..0. .1..0..1..0..1..0
..0..0..0..1..0..0. .0..0..1..1..1..0. .0..0..1..1..0..0. .0..0..1..1..0..0
CROSSREFS
Cf. A297866.
Sequence in context: A264493 A224419 A372950 * A065939 A298131 A077346
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 07 2018
STATUS
approved