A257430 Number of (5+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally

150016, 403951, 1290910, 4442466, 12316842, 39029574, 121832476, 359681533, 1066288882, 3126365543, 8921825684, 25527972436, 72826289929, 206321352365, 583012447599, 1642831496480, 4611094251243, 12910731728619, 36064024641002

Offset

1,1

Comments

Row 5 of A257426

Links

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

Example

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

Crossrefs

Cf. A257426

Sequence in context: A236900 A184503 A257423 * A254239 A051651 A065324

Adjacent sequences: A257427 A257428 A257429 * A257431 A257432 A257433

Keyword

nonn

Author

R. H. Hardin, Apr 22 2015

Status

approved