A184407 T(n,k)=1/6 the number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock containing two of one value, three of another, and four of the last

1260, 16140, 16140, 201543, 326100, 201543, 2563542, 6361037, 6361037, 2563542, 32546547, 127484430, 190904616, 127484430, 32546547, 414199395, 2555137939, 5944363862, 5944363862, 2555137939, 414199395, 5273355420, 51389641795

Offset

1,1

Comments

Table starts

.......1260.......16140.......201543......2563542.....32546547.....414199395

......16140......326100......6361037....127484430...2555137939...51389641795

.....201543.....6361037....190904616...5944363862.185205695016.5797874917385

....2563542...127484430...5944363862.289901412506

...32546547..2555137939.185205695016

..414199395.51389641795

.5273355420

Links

R. H. Hardin, Table of n, a(n) for n = 1..31

Example

Some solutions with a(1,1)=0 for 5X4
..0..0..0..2....0..0..0..0....0..0..0..0....0..0..0..2....0..0..0..2
..0..1..1..2....0..1..1..2....0..1..1..1....0..1..1..1....0..1..1..0
..1..2..2..0....2..1..2..0....1..2..2..0....2..1..2..0....2..1..2..0
..0..0..0..0....0..2..1..0....0..0..1..0....1..0..2..2....1..2..0..0
..0..1..2..1....1..0..2..2....0..1..0..1....2..1..0..2....0..1..2..0

Crossrefs

Sequence in context: A203402 A047634 A172314 * A184404 A179725 A101469

Adjacent sequences: A184404 A184405 A184406 * A184408 A184409 A184410

Keyword

nonn,tabl

Author

R. H. Hardin Jan 12 2011

Status

approved