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A296325
Number of nX6 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 2 neighboring 1s.
1
1, 26, 122, 562, 3569, 20088, 112235, 643541, 3666933, 20890748, 119144071, 679253594, 3873420006, 22088544036, 125956423940, 718274061983, 4096006211974, 23357654042928, 133198547653768, 759573589408188
OFFSET
1,2
COMMENTS
Column 6 of A296327.
FORMULA
Empirical recurrence of order 83 (see link above)
EXAMPLE
Some solutions for n=5
..0..1..1..0..0..0. .0..0..0..0..1..1. .0..0..1..1..0..0. .0..1..1..0..0..0
..1..0..1..0..0..0. .0..1..1..1..0..1. .0..1..0..1..0..0. .1..0..1..0..0..0
..1..0..1..0..0..0. .1..0..0..0..0..1. .1..0..0..1..0..0. .1..0..1..0..0..1
..1..1..0..0..0..0. .1..1..1..0..0..1. .1..0..1..0..0..1. .1..0..1..0..1..1
..0..0..0..0..0..0. .0..0..1..1..1..0. .1..1..0..0..1..1. .1..1..0..0..0..0
CROSSREFS
Cf. A296327.
Sequence in context: A100162 A051729 A100163 * A183066 A124954 A126413
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 10 2017
STATUS
approved