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

1,1

Comments

Column 7 of A184673

Links

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

Example

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

Crossrefs

Sequence in context: A285433 A104965 A251807 * A034610 A015410 A189055

Adjacent sequences: A184668 A184669 A184670 * A184672 A184673 A184674

Keyword

nonn

Author

R. H. Hardin Jan 19 2011

Status

approved