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A302378
Number of nX5 0..1 arrays with every element equal to 1, 2, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1
3, 161, 2886, 56541, 1089035, 20993054, 404225195, 7787623959, 150008013842, 2889619130491, 55662670608009, 1072229459666190, 20654344779041771, 397864432000232871, 7664058367627889686, 147632676645411073113
OFFSET
1,1
COMMENTS
Column 5 of A302381.
FORMULA
Empirical recurrence of order 84 (see link above)
EXAMPLE
Some solutions for n=5
..0..0..0..1..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..0..1..1..0..0. .0..1..1..1..1. .1..0..1..1..0. .1..0..0..1..1
..0..0..1..1..0. .1..1..1..0..1. .0..1..0..1..1. .1..1..0..0..1
..1..0..1..1..1. .1..0..0..1..1. .1..1..0..0..1. .1..1..1..1..0
..1..1..0..1..1. .0..0..0..0..0. .1..1..1..1..0. .0..0..1..0..0
CROSSREFS
Cf. A302381.
Sequence in context: A108159 A201429 A067322 * A303099 A302950 A173128
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 06 2018
STATUS
approved