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A317156 Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero. 1
5, 21, 29, 105, 379, 1245, 5458, 25315, 111407, 527886, 2563160, 12170793, 58396626, 282895106, 1362930990, 6568303800, 31746692725, 153297619453, 739913361896, 3573891092629, 17261311752935, 83352383451568, 402555795489298 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A317160.
LINKS
FORMULA
Empirical recurrence of order 66 (see link above)
EXAMPLE
Some solutions for n=5
..0..0..0..1. .0..0..0..1. .0..0..1..1. .0..0..1..1. .0..0..0..1
..0..0..1..1. .1..0..0..0. .0..1..1..1. .0..1..1..1. .1..0..0..0
..1..0..1..1. .0..0..0..0. .1..1..1..1. .1..1..1..1. .0..0..0..0
..0..0..1..1. .0..0..0..0. .1..1..1..0. .1..1..1..1. .0..0..0..0
..0..0..0..1. .0..0..0..0. .1..1..1..1. .0..1..1..0. .0..1..0..0
CROSSREFS
Cf. A317160.
Sequence in context: A305343 A186304 A316235 * A304665 A306168 A305645
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 22 2018
STATUS
approved

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Last modified March 2 21:56 EST 2024. Contains 370498 sequences. (Running on oeis4.)