A207358 T(n,k)=Number of nXk 0..2 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically

3, 9, 9, 25, 81, 25, 69, 625, 625, 69, 190, 4761, 12468, 4761, 190, 523, 36100, 244134, 244134, 36100, 523, 1440, 273529, 4752484, 12218660, 4752484, 273529, 1440, 3965, 2073600, 92438519, 607211313, 607211313, 92438519, 2073600, 3965, 10918

Offset

1,1

Comments

Table starts

....3........9..........25.............69................190

....9.......81.........625...........4761..............36100

...25......625.......12468.........244134............4752484

...69.....4761......244134.......12218660..........607211313

..190....36100.....4752484......607211313........76964941511

..523...273529....92438519....30147535858......9745296760510

.1440..2073600..1799496100..1498532240063...1235754047831188

.3965.15721225.35036066712.74502855991182.156741953997034318

Links

R. H. Hardin, Table of n, a(n) for n = 1..127

Example

Some solutions for n=4 k=3
..1..2..2....2..1..2....1..2..2....1..0..1....2..0..1....0..1..2....2..2..2
..0..0..1....1..2..1....2..1..2....2..0..2....2..0..2....1..2..0....2..0..2
..1..2..0....0..2..1....2..2..2....0..2..2....1..0..2....0..1..0....2..2..0
..1..2..1....1..1..1....2..1..1....2..0..2....1..2..1....2..0..2....0..2..1

Crossrefs

Column 1 is A206727

Column 2 is A206728

Sequence in context: A226717 A207208 A206734 * A207201 A206863 A206957

Adjacent sequences: A207355 A207356 A207357 * A207359 A207360 A207361

Keyword

nonn,tabl

Author

R. H. Hardin Feb 17 2012

Status

approved