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A316929
Number of nX5 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
1
1, 82, 851, 20235, 467377, 10973407, 259460352, 6154985913, 146148278604, 3471990602612, 82499442224779, 1960457573018558, 46588485306165862, 1107148416875362282, 26310891701112728202, 625268175344710762738
OFFSET
1,2
COMMENTS
Column 5 of A316932.
FORMULA
Empirical recurrence of order 89 (see link above)
EXAMPLE
Some solutions for n=5
..0..0..0..1..1. .0..1..0..0..1. .0..1..0..0..1. .0..0..0..1..0
..1..1..0..1..1. .0..1..0..0..1. .0..1..0..0..1. .1..1..1..1..0
..0..1..0..0..0. .0..1..0..0..0. .0..0..0..0..1. .0..1..0..0..1
..0..1..0..0..0. .0..1..1..1..1. .0..1..1..0..1. .1..0..1..1..1
..1..0..0..1..1. .0..1..0..0..0. .0..1..0..1..0. .0..1..0..0..0
CROSSREFS
Cf. A316932.
Sequence in context: A305682 A317062 A230394 * A317700 A173356 A083386
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 16 2018
STATUS
approved