A184652 T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with each 3X3 subblock nonsingular

212898, 11826498, 11826498, 657272274, 2393686398, 657272274, 36516002466, 484872198498, 484872198498, 36516002466, 2028771948738, 98159708768710, 358095672726522, 98159708768710, 2028771948738, 112716440618754

Offset

1,1

Comments

Table starts

..........212898..........11826498..........657272274........36516002466

........11826498........2393686398.......484872198498.....98159708768710

.......657272274......484872198498....358095672726522.264254925711547906

.....36516002466....98159708768710.264254925711547906

...2028771948738.19873044281563890

.112716440618754

Links

R. H. Hardin, Table of n, a(n) for n = 1..23

Example

Some solutions for 5X4
..0..0..2..0....0..0..2..0....0..0..2..0....0..0..2..0....0..0..2..0
..1..0..0..2....1..0..0..2....1..0..0..2....1..0..0..2....1..0..0..2
..0..1..0..0....1..1..0..0....2..1..0..0....2..1..0..0....1..1..0..0
..2..3..3..2....0..1..1..1....1..1..1..0....0..3..3..2....2..2..1..1
..2..0..2..1....2..1..1..2....0..1..3..1....3..0..3..1....2..0..1..2

Crossrefs

Sequence in context: A143641 A184383 A234829 * A184650 A172643 A172746

Adjacent sequences: A184649 A184650 A184651 * A184653 A184654 A184655

Keyword

nonn,tabl

Author

R. H. Hardin Jan 19 2011

Status

approved