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A299652
Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
1
32, 2048, 116654, 6856789, 401989538, 23582064542, 1383316377321, 81146123707386, 4760069868306954, 279228031443069248, 16379652618721023225, 960838424607723816457, 56363251335370746218101, 3306295856088555646566574
OFFSET
1,1
COMMENTS
Column 6 of A299654.
FORMULA
Empirical recurrence of order 89 (see link above)
EXAMPLE
Some solutions for n=5
..0..0..0..1..0..0. .0..0..1..0..1..0. .0..0..0..1..0..1. .0..0..0..1..0..1
..0..0..1..0..1..0. .0..0..1..0..0..1. .0..0..1..0..1..1. .0..0..1..0..1..1
..0..0..1..1..0..0. .0..0..1..0..1..0. .0..0..1..0..0..1. .0..0..1..0..0..0
..0..0..1..1..1..1. .0..0..0..1..1..0. .0..0..0..1..0..1. .0..0..0..0..1..1
..0..0..0..0..0..1. .0..0..1..0..1..0. .0..0..1..1..1..0. .0..0..1..1..0..0
CROSSREFS
Cf. A299654.
Sequence in context: A316806 A213416 A317523 * A300206 A303419 A301405
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 15 2018
STATUS
approved