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A302805
Number of nX5 0..1 arrays with every element equal to 0, 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1
16, 384, 5117, 74072, 1089773, 15904814, 232260380, 3396923500, 49653502029, 725819333902, 10610883930284, 155117154439613, 2267613174993517, 33149833862902867, 484610500065661957, 7084420896663049377
OFFSET
1,1
COMMENTS
Column 5 of A302808.
FORMULA
Empirical recurrence of order 90 (see link above)
EXAMPLE
Some solutions for n=5
..0..0..0..0..1. .0..0..0..0..0. .0..0..0..0..1. .0..0..0..0..1
..0..1..1..0..0. .1..1..1..1..1. .0..1..1..0..0. .0..1..1..1..0
..0..0..1..0..0. .1..0..0..0..1. .1..1..0..0..1. .1..0..0..1..0
..0..1..1..0..0. .0..0..0..1..0. .0..1..0..1..1. .1..0..1..1..0
..0..0..1..0..1. .1..1..1..1..0. .1..0..0..0..0. .1..0..1..1..1
CROSSREFS
Cf. A302808.
Sequence in context: A340689 A302262 A302962 * A303466 A116166 A034976
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 13 2018
STATUS
approved