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.

5, 516, 21963, 700534, 19517898, 490925804, 11651389723, 264077146748, 5787991095939, 123521985310158, 2580501773367232, 52971731775396896, 1071564173210392627, 21408664196720380932, 423174810399432961803

Offset

1,1

Comments

Column 6 of A283634.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 81

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

Adjacent sequences: A283629 A283630 A283631 * A283633 A283634 A283635

Keyword

nonn

Author

R. H. Hardin, Mar 12 2017

Status

approved