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A283542
Number of nX7 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors.
1
81, 1444, 42664, 1094959, 29377334, 778500603, 20707472573, 550220030803, 14624495679716, 388675661283840, 10330112591962531, 274548845582551728, 7296844499730463987, 193932365230917334017, 5154251053305056299587
OFFSET
1,1
COMMENTS
Column 7 of A283543.
FORMULA
Empirical recurrence of order 59 (see link above)
EXAMPLE
Some solutions for n=3
..0..0..1..1..0..0..1. .0..1..0..1..1..0..1. .0..1..0..1..0..0..0
..0..0..0..0..0..0..1. .0..1..0..0..0..0..0. .0..0..0..0..0..1..0
..0..0..0..0..0..0..1. .1..0..0..1..0..1..1. .0..1..0..0..0..0..0
CROSSREFS
Cf. A283543.
Sequence in context: A236738 A236801 A282646 * A237771 A110921 A236867
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 10 2017
STATUS
approved