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A295037
Number of nX5 0..1 arrays with each 1 horizontally or vertically adjacent to 1 or 2 1s.
1
12, 280, 3853, 59126, 898493, 13706771, 209181266, 3184995895, 48548926944, 740019106008, 11277857830329, 171883749077632, 2619682437092951, 39926222792932513, 608509663116604097, 9274219880373144746
OFFSET
1,1
COMMENTS
Column 5 of A295040.
FORMULA
Empirical recurrence of order 91 (see link above)
EXAMPLE
Some solutions for n=4
..0..1..1..1..1. .0..0..1..1..0. .0..0..1..1..1. .0..0..1..1..0
..1..1..0..0..0. .1..1..0..1..0. .0..0..0..0..1. .0..0..0..0..1
..1..0..1..1..1. .0..1..0..0..0. .0..1..1..0..0. .0..1..0..0..1
..1..0..1..0..1. .0..1..1..0..0. .0..0..0..0..0. .0..1..0..0..0
CROSSREFS
Cf. A295040.
Sequence in context: A296640 A239780 A351765 * A295528 A166337 A183767
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 12 2017
STATUS
approved

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Last modified September 23 04:27 EDT 2024. Contains 376142 sequences. (Running on oeis4.)