A183787 Half the number of (n+1)X5 0..2 arrays with no 2X2 subblock having sum 4

10428, 948164, 84888699, 7635071835, 685721542209, 61615880574766, 5535599672278525, 497350558783784298, 44683911579501412754, 4014608234358287116731, 360689837976278213599877

Offset

1,1

Comments

Column 4 of A183792

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 3X5
..0..0..0..2..1....0..0..0..2..1....0..0..0..2..2....0..0..0..2..1
..2..1..1..2..1....0..0..0..1..1....1..1..0..0..1....1..0..1..2..1
..2..1..2..0..2....0..2..1..0..0....2..1..0..2..2....0..2..2..2..2

Crossrefs

Sequence in context: A157445 A010082 A068759 * A204050 A114126 A171352

Adjacent sequences: A183784 A183785 A183786 * A183788 A183789 A183790

Keyword

nonn

Author

R. H. Hardin Jan 07 2011

Status

approved