A184564 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock summing to less than 4

50, 336, 336, 2167, 5736, 2167, 14180, 91157, 91157, 14180, 92429, 1486258, 3436266, 1486258, 92429, 603249, 24057629, 134840527, 134840527, 24057629, 603249, 3935721, 390354307, 5228522011, 12900566348, 5228522011, 390354307, 3935721

Offset

1,1

Comments

Table starts

.........50............336...............2167..................14180

........336...........5736..............91157................1486258

.......2167..........91157............3436266..............134840527

......14180........1486258..........134840527............12900566348

......92429.......24057629.........5228522011..........1214657950233

.....603249......390354307.......203570564774........115000791536877

....3935721.....6329171799......7915660174974......10868641315040295

...25680486...102644935902....307926979784837....1027803541995894568

..167558680..1664547601646..11976979258313503...97176104485641628222

.1093290051.26993866274311.465872448754593695.9188347231740579769607

Links

R. H. Hardin, Table of n, a(n) for n = 1..180

Example

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

Crossrefs

Sequence in context: A221572 A124809 A261803 * A184556 A373131 A334697

Adjacent sequences: A184561 A184562 A184563 * A184565 A184566 A184567

Keyword

nonn,tabl

Author

R. H. Hardin Jan 17 2011

Status

approved