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A283689
Number of nX6 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors.
1
64, 1824, 47829, 1392868, 39372084, 1119189256, 31815868749, 904083654190, 25694926726796, 730246763504188, 20753592413744794, 589817414148933249, 16762605646255786265, 476393216356370195357, 13539093722749224067603
OFFSET
1,1
COMMENTS
Column 6 of A283691.
FORMULA
Empirical recurrence of order 83 (see link above)
EXAMPLE
Some solutions for n=3
..0..1..0..0..0..0. .1..1..1..0..0..0. .0..0..0..0..0..1. .0..0..0..0..0..0
..1..0..0..0..0..1. .0..0..0..0..0..1. .1..0..1..1..0..0. .1..0..1..0..0..1
..1..0..0..1..0..0. .0..0..1..0..1..1. .0..0..1..1..0..0. .1..0..1..0..0..0
CROSSREFS
Cf. A283691.
Sequence in context: A005609 A065788 A264275 * A226010 A203539 A116133
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 14 2017
STATUS
approved