A186136 Number of (n+1)X5 0..2 arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace

27000, 1512792, 88110594, 5108761008, 296649133848, 17226840778164, 1000411106914620, 58096554299749404, 3373827362098348122, 195927401888880256332, 11378042919420637879800, 660754202433673023114228

Offset

1,1

Comments

Column 4 of A186141

Links

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

Example

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

Crossrefs

Sequence in context: A305728 A253485 A253480 * A159995 A253339 A236825

Adjacent sequences: A186133 A186134 A186135 * A186137 A186138 A186139

Keyword

nonn

Author

R. H. Hardin Feb 13 2011

Status

approved