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