A184671 Number of (n+1)X8 0..3 arrays with no 2X2 subblock summing to less than 6.

305991368, 4308670152724, 46028365937520330, 545098899148923125052, 6249280647180715433706216, 72469574283521150229737165516, 837185450907978354702239657652981, 9684133255072575015900450075888762942

Offset: 1

Author

R. H. Hardin Jan 19 2011

Keywords

• nonn

Comments

Column 7 of A184673

Examples

			Some solutions for 3X8
..0..0..0..0..2..1..0..3....0..0..0..0..2..1..3..3....0..0..0..0..2..3..0..3
..3..3..3..3..2..3..2..3....3..3..3..3..2..2..3..1....3..3..3..3..2..3..1..2
..0..0..0..0..2..1..1..1....0..0..0..0..2..3..2..3....0..0..0..0..2..2..2..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..12