A183792 T(n,k)=Half the number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock having sum 4

31, 216, 216, 1500, 3552, 1500, 10428, 57966, 57966, 10428, 72468, 948164, 2214457, 948164, 72468, 503676, 15497634, 84888699, 84888699, 15497634, 503676, 3500532, 253372446, 3250564943, 7635071835, 3250564943, 253372446, 3500532, 24329052

Offset

1,1

Comments

Table starts

.........31............216...............1500..................10428

........216...........3552..............57966.................948164

.......1500..........57966............2214457...............84888699

......10428.........948164...........84888699.............7635071835

......72468.......15497634.........3250564943...........685721542209

.....503676......253372446.......124516635830.........61615880574766

....3500532.....4142036148......4769141272937.......5535599672278525

...24329052....67714639662....182672398106924.....497350558783784298

..169088148..1106996131802...6996783566736966...44683911579501412754

.1175174460.18097205612196.267994941652776449.4014608234358287116731

Links

R. H. Hardin, Table of n, a(n) for n = 1..144

Example

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

Crossrefs

Sequence in context: A121616 A284899 A062393 * A183784 A042874 A221448

Adjacent sequences: A183789 A183790 A183791 * A183793 A183794 A183795

Keyword

nonn,tabl

Author

R. H. Hardin Jan 07 2011

Status

approved