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A283638
Number of 5Xn 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
0, 142, 3729, 85469, 1185010, 19517898, 272974255, 3604990867, 47435044139, 593340785252, 7330968283591, 88773406395265, 1058150004752104, 12466473723260994, 145192561852215324, 1675488032105197802
OFFSET
1,2
COMMENTS
Row 5 of A283634.
FORMULA
Empirical recurrence of order 63 (see link above)
EXAMPLE
Some solutions for n=4
..0..0..1..1. .0..0..0..1. .0..0..0..0. .0..0..0..0. .0..0..1..0
..1..0..0..0. .0..0..1..0. .0..0..0..0. .1..1..0..0. .0..0..1..0
..1..0..0..1. .0..1..1..0. .0..1..1..0. .0..1..0..0. .0..0..1..1
..0..1..1..0. .0..0..0..0. .0..1..0..0. .1..0..0..0. .1..0..0..0
..1..0..0..1. .0..0..0..1. .1..0..0..0. .0..0..0..1. .1..1..1..0
CROSSREFS
Cf. A283634.
Sequence in context: A259422 A219146 A200453 * A375331 A235457 A200557
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 12 2017
STATUS
approved