A200808 Number of n X 7 0..2 arrays with no average of any element and its diagonal, antidiagonal, horizontal and vertical neighbors equal to one.

260, 1123856, 349133136, 241586613760, 206279107863030

Offset

1,1

Comments

Column 7 of A200809.

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for 3 X 3
..0..0..0..0..1..0..0....0..0..0..0..1..2..1....0..0..0..0..0..0..1
..0..0..0..0..0..0..2....0..0..0..1..1..0..0....0..0..0..0..2..0..1
..0..0..0..1..1..1..0....0..0..0..2..1..0..2....0..0..0..0..0..0..1

Crossrefs

Cf. A200809.

Sequence in context: A003734 A216940 A200578 * A350084 A280325 A045026

Adjacent sequences: A200805 A200806 A200807 * A200809 A200810 A200811

Keyword

nonn

Author

R. H. Hardin, Nov 22 2011

Status

approved