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A183792 T(n,k)=Half the number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock having sum 4 10
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 (list; table; graph; refs; listen; history; text; internal format)
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
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
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Jan 07 2011
STATUS
approved

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Last modified July 20 22:04 EDT 2024. Contains 374461 sequences. (Running on oeis4.)