A257424 Number of (n+2)X(6+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally

514920, 1246585, 5347670, 19771628, 39029574, 115919394, 317271378, 756210536, 2131836574, 5828147664, 15609807360, 43074413716, 116962517460, 315815849814, 863675994118, 2358777950090, 6431658379770, 17567133145546, 47951743101422

Offset

1,1

Comments

Column 6 of A257426

Links

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

Example

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

Crossrefs

Cf. A257426

Sequence in context: A306952 A336060 A329461 * A257431 A254240 A087096

Adjacent sequences: A257421 A257422 A257423 * A257425 A257426 A257427

Keyword

nonn

Author

R. H. Hardin, Apr 22 2015

Status

approved