A184784 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock nonsingular

12792, 260268, 260268, 5299212, 13313404, 5299212, 107810856, 681288932, 681288932, 107810856, 2193592920, 34797264276, 87624157296, 34797264276, 2193592920, 44633574216, 1778231844136, 11238839929536, 11238839929536

Offset

1,1

Comments

Table starts

..........12792...........260268............5299212...........107810856

.........260268.........13313404..........681288932.........34797264276

........5299212........681288932........87624157296......11238839929536

......107810856......34797264276.....11238839929536....3617921434188172

.....2193592920....1778231844136...1442620554904424.1165690391152078172

....44633574216...90873049503556.185182404965507590

...908160565032.4643641622051596

.18478374229416

Links

R. H. Hardin, Table of n, a(n) for n = 1..39

Example

Some solutions for 5X4
..0..0..1..0....0..0..1..0....0..0..1..0....0..0..1..0....0..0..1..0
..2..0..0..1....1..0..0..1....1..0..0..1....2..0..0..1....2..0..0..1
..1..1..0..2....2..1..0..2....2..1..0..0....1..2..0..1....2..2..0..1
..2..1..1..2....2..1..2..1....0..0..1..1....0..2..1..1....2..1..1..0
..2..0..1..1....2..0..2..2....0..2..1..0....1..0..2..2....1..2..0..2

Crossrefs

Sequence in context: A187597 A203273 A217184 * A184780 A206796 A206966

Adjacent sequences: A184781 A184782 A184783 * A184785 A184786 A184787

Keyword

nonn,tabl

Author

R. H. Hardin Jan 21 2011

Status

approved