A283639 Number of 6Xn 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.

0, 606, 28828, 856710, 20051838, 490925804, 10666178322, 218881780434, 4439994180178, 86144471693502, 1647236588215940, 30886611480481804, 570240744935345282, 10403840277141487378, 187674700355041651540

Offset

1,2

Comments

Row 6 of A283634.

Links

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

R. H. Hardin, Empirical recurrence of order 96

Formula

Empirical recurrence of order 96 (see link above)

Example

Some solutions for n=3
..1..0..0. .1..1..0. .0..1..1. .1..1..1. .0..1..1. .1..1..0. .0..1..0
..0..0..0. .1..0..0. .1..0..1. .0..0..1. .0..0..0. .0..1..0. .1..0..1
..0..1..1. .1..0..0. .0..0..0. .0..0..0. .1..1..0. .1..0..1. .1..0..1
..0..1..0. .1..1..0. .0..0..0. .1..0..0. .1..0..0. .0..0..0. .1..0..1
..0..0..1. .1..0..1. .1..1..1. .1..0..0. .0..1..0. .1..1..0. .0..0..0
..1..0..1. .0..0..1. .0..0..1. .1..1..0. .0..0..0. .0..0..0. .1..1..1

Crossrefs

Cf. A283634.

Sequence in context: A249524 A064250 A186818 * A332160 A131215 A096525

Adjacent sequences: A283636 A283637 A283638 * A283640 A283641 A283642

Keyword

nonn

Author

R. H. Hardin, Mar 12 2017

Status

approved