A258605 Number of (n+2)X(1+2) 0..2 arrays with no 3x3 subblock diagonal sum less than the antidiagonal sum or central row sum less than the central column sum

7500, 76729, 682356, 6056521, 46060932, 354117124, 2476716772, 17477633209, 115323919920, 766785689569, 4857669976665, 30962324784400, 190429804895616, 1176883728336121, 7081348901202170, 42770630476678225, 253149492547824624

Offset

1,1

Comments

Column 1 of A258612

Links

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

Example

Some solutions for n=2
..2..2..1....0..0..1....2..2..2....2..1..0....2..0..1....0..1..0....2..1..0
..2..0..1....2..1..1....2..0..1....0..0..1....2..2..1....0..0..1....1..1..1
..1..1..0....1..2..2....2..1..2....1..0..2....1..0..1....0..0..2....1..1..2
..2..1..1....1..2..0....0..1..1....0..2..1....0..0..1....0..0..1....1..2..2

Crossrefs

Cf. A258612

Sequence in context: A253338 A252960 A258612 * A258604 A093225 A090742

Adjacent sequences: A258602 A258603 A258604 * A258606 A258607 A258608

Keyword

nonn

Author

R. H. Hardin, Jun 05 2015

Status

approved