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A317893
Number of nX5 0..1 arrays with every element unequal to 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
0, 5, 59, 549, 6193, 67792, 741031, 8119416, 88900423, 973425343, 10659656523, 116727563443, 1278205487608, 13996816969414, 153270295230335, 1678365696618678, 18378717159170458, 201253665901097643
OFFSET
1,2
COMMENTS
Column 5 of A317896.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..0..1. .0..1..0..1..0. .0..1..0..1..1. .0..1..0..0..0
..1..0..0..0..1. .1..0..1..1..1. .1..1..1..0..0. .1..0..1..1..1
..1..0..1..0..0. .1..0..0..0..1. .0..1..0..1..0. .0..1..1..1..0
..0..1..1..1..0. .0..1..1..0..1. .0..0..1..1..0. .0..0..0..0..1
..1..0..1..0..1. .0..1..0..1..0. .1..0..1..0..1. .1..1..1..1..0
CROSSREFS
Cf. A317896.
Sequence in context: A112461 A222585 A260630 * A106105 A178003 A036947
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 10 2018
STATUS
approved