A183799 1/4 the number of (n+1)X7 0..3 arrays with no 2X2 subblock having sum 6

22152262, 124651925557, 696376467061670, 3896032216049375462, 21790300291942204212420, 121880956287359200992546463, 681711632433215037867828560638, 3813006321741956987579568546477519

Offset

1,1

Comments

Column 6 of A183802

Links

R. H. Hardin, Table of n, a(n) for n = 1..17

Example

Some solutions for 3X7
..0..0..0..0..1..3..3....0..0..0..0..3..2..3....0..0..0..0..2..1..0
..0..0..0..0..1..2..1....0..0..0..0..0..0..0....0..0..0..0..0..2..0
..0..0..0..0..1..3..3....0..0..0..0..1..3..1....0..0..0..0..3..2..0

Crossrefs

Sequence in context: A186595 A210076 A184375 * A205096 A183969 A112644

Adjacent sequences: A183796 A183797 A183798 * A183800 A183801 A183802

Keyword

nonn

Author

R. H. Hardin Jan 07 2011

Status

approved