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

Author

R. H. Hardin Jan 17 2011

Keywords

• nonn
• tabl

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

Examples

			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
		

Links

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