A254025 Number of (6+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal median nondecreasing horizontally, vertically and ne-to-sw antidiagonally

404672, 774662, 1467412, 3145824, 5870794, 12820652, 28891318, 56477396, 113129593, 220625749, 417272461, 791192226, 1462692894, 2614134427, 4635774152, 8118042503, 14024453614, 24146030293, 41379984370, 70509225090

Offset

1,1

Comments

Row 6 of A254020

Links

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

Example

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

Crossrefs

Sequence in context: A186606 A227711 A247305 * A254018 A254892 A204764

Adjacent sequences: A254022 A254023 A254024 * A254026 A254027 A254028

Keyword

nonn

Author

R. H. Hardin, Jan 22 2015

Status

approved