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A298131
Number of nX6 0..1 arrays with every element equal to 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.
1
0, 25, 223, 1055, 21537, 285084, 3752401, 52922003, 714854991, 9882443650, 135778074542, 1864072607185, 25646093419747, 352488786489609, 4845708865503389, 66618364620496743, 915822218872378347
OFFSET
1,2
COMMENTS
Column 6 of A298133.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..0..0..0. .0..0..1..1..0..0. .0..0..1..1..0..0. .0..0..0..1..1..1
..0..1..0..1..1..0. .0..1..0..1..1..0. .0..1..0..0..1..0. .0..1..1..0..0..1
..0..1..1..0..1..0. .0..1..0..0..1..1. .0..0..1..1..0..0. .1..1..0..1..0..1
..0..0..1..0..0..1. .1..0..1..0..1..0. .1..1..0..1..0..1. .0..1..0..1..0..1
..0..1..1..0..1..1. .1..1..0..1..0..0. .1..1..0..0..1..1. .0..0..0..0..1..1
CROSSREFS
Cf. A298133.
Sequence in context: A372950 A297864 A065939 * A077346 A351470 A045785
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 13 2018
STATUS
approved