A254850 Number of (n+2) X (4+2) 0..1 arrays with no 3 X 3 subblock diagonal sum one and no antidiagonal sum two.

4624, 6889, 13456, 37636, 99856, 271441, 729316, 1996569, 5466244, 15202201, 41550916, 113891584, 307932304, 843379681, 2298435364, 6356553984, 17355427600, 47726519296, 129502098496, 355212424009, 966505272100

Offset

1,1

Comments

Column 4 of A254854.

Links

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

Example

Some solutions for n=4
..0..0..1..1..0..0....1..1..0..0..1..0....1..0..1..1..0..1....0..0..0..1..0..0
..0..0..0..1..1..0....0..0..0..1..0..1....0..1..1..1..1..1....0..1..0..0..1..1
..0..0..0..0..1..1....0..0..1..1..1..0....1..1..0..1..1..0....0..0..1..0..0..0
..1..0..0..0..0..1....0..1..0..1..1..1....1..0..1..1..0..1....0..0..0..0..0..0
..1..0..0..0..0..0....1..0..1..0..1..1....0..1..1..1..1..1....0..0..0..0..1..0
..0..0..1..0..0..0....1..1..0..1..0..0....1..1..0..1..1..1....1..1..0..0..0..1

Crossrefs

Cf. A254854.

Sequence in context: A116226 A115446 A358445 * A139410 A031566 A236815

Adjacent sequences: A254847 A254848 A254849 * A254851 A254852 A254853

Keyword

nonn

Author

R. H. Hardin, Feb 08 2015

Status

approved