A184673 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock summing to less than 6.

150, 1740, 1740, 19269, 67330, 19269, 216912, 2405797, 2405797, 216912, 2430631, 88458672, 266060160, 88458672, 2430631, 27278035, 3225439429, 30765364899, 30765364899, 3225439429, 27278035, 305991368, 117938741095, 3509487618613

Offset

1,1

Comments

Table starts

.......150..........1740.............19269................216912

......1740.........67330...........2405797..............88458672

.....19269.......2405797.........266060160...........30765364899

....216912......88458672.......30765364899........11348244616180

...2430631....3225439429.....3509487618613......4110692224930359

..27278035..117938741095...402221585928132...1498459859767029015

.305991368.4308670152724.46028365937520330.545098899148923125052

Links

R. H. Hardin, Table of n, a(n) for n = 1..112

Example

Some solutions for 4X3
..2..2..1....2..2..2....2..2..3....2..2..2....2..0..2....0..2..0....0..2..2
..2..2..2....2..0..3....2..0..3....2..2..3....2..3..2....2..2..3....2..3..1
..3..1..2....3..3..0....3..2..3....1..1..3....2..0..3....3..3..1....2..2..3
..0..2..3....2..2..2....0..3..1....2..2..2....3..3..3....1..1..3....0..3..1

Crossrefs

Sequence in context: A211554 A073614 A191547 * A184665 A088361 A206041

Adjacent sequences: A184670 A184671 A184672 * A184674 A184675 A184676

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 19 2011

Status

approved