A258680 Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum equal to the antidiagonal sum

5744640, 125888400, 4096960560, 133333061904, 3662507469600, 100604912040000, 3022970884380000, 90834063491610000, 2620890308853171600, 75622137191681873296, 2230153722476731923648, 65768911202153889517824

Offset

1,1

Comments

Column 7 of A258681

Links

R. H. Hardin, Table of n, a(n) for n = 1..13

Example

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

Crossrefs

Cf. A258681

Sequence in context: A151655 A283445 A234256 * A151699 A038828 A038817

Adjacent sequences: A258677 A258678 A258679 * A258681 A258682 A258683

Keyword

nonn

Author

R. H. Hardin, Jun 07 2015

Status

approved