A251680 Number of (n+2)X(6+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 4

12063, 36075, 184139, 1116829, 7229485, 47407259, 310560937, 2035481639, 13365199539, 87801989105, 576739855753, 3788602403057, 24890263396483, 163532123962817, 1074432510196251, 7059170770215635, 46379935274211457

Offset

1,1

Comments

Column 6 of A251682

Links

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

Example

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

Crossrefs

Sequence in context: A064966 A292815 A252304 * A247688 A236726 A236701

Adjacent sequences: A251677 A251678 A251679 * A251681 A251682 A251683

Keyword

nonn

Author

R. H. Hardin, Dec 06 2014

Status

approved