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A283632 Number of nX6 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements. 1
5, 516, 21963, 700534, 19517898, 490925804, 11651389723, 264077146748, 5787991095939, 123521985310158, 2580501773367232, 52971731775396896, 1071564173210392627, 21408664196720380932, 423174810399432961803 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A283634.
LINKS
FORMULA
Empirical recurrence of order 81 (see link above)
EXAMPLE
Some solutions for n=3
..0..1..0..0..0..1. .0..0..0..1..0..1. .0..0..0..1..0..1. .0..0..1..0..0..1
..1..0..0..1..0..1. .1..0..0..1..0..1. .0..0..0..0..0..1. .0..0..0..0..1..1
..1..1..0..0..0..0. .0..0..1..0..1..0. .0..0..1..1..1..1. .0..1..1..0..1..0
CROSSREFS
Cf. A283634.
Sequence in context: A318096 A249805 A003394 * A270963 A110721 A219164
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 12 2017
STATUS
approved

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Last modified February 25 06:40 EST 2024. Contains 370310 sequences. (Running on oeis4.)