A257425 Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally

1700100, 4137316, 18009368, 64652177, 121832476, 356678661, 1037269100, 2359203628, 7099788830, 18202585668, 46382073874, 125815055340, 344959665026, 927065687056, 2543518276740, 6912822214852, 18798048722510, 51304587059146

Offset

1,1

Comments

Column 7 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..1..1..1..1....0..0..0..0..1..1..1..0..1
..0..0..0..0..0..0..1..1..0....0..0..1..1..1..1..1..1..0
..0..1..0..0..1..1..1..1..1....1..0..1..1..0..1..1..1..0

Crossrefs

Cf. A257426

Sequence in context: A251851 A083600 A257432 * A254241 A172792 A272710

Adjacent sequences: A257422 A257423 A257424 * A257426 A257427 A257428

Keyword

nonn

Author

R. H. Hardin, Apr 22 2015

Status

approved