A183791 Half the number of (n+1)X9 0..2 arrays with no 2X2 subblock having sum 4

24329052, 67714639662, 182672398106924, 497350558783784298, 1350253009910264801420, 3669246745844998053514738, 9967780407278401322169609464, 27081302315719663051228636805358

Offset

1,1

Comments

Column 8 of A183792

Links

R. H. Hardin, Table of n, a(n) for n = 1..16

Example

Some solutions for 3X9
..0..0..0..0..0..2..2..0..0....0..0..0..0..0..1..0..0..2
..0..0..0..0..0..0..1..0..1....0..0..0..0..0..1..0..0..0
..0..0..0..0..0..2..0..0..0....0..0..0..0..0..2..0..1..0

Crossrefs

Sequence in context: A135954 A203260 A268290 * A115533 A256013 A187315

Adjacent sequences: A183788 A183789 A183790 * A183792 A183793 A183794

Keyword

nonn

Author

R. H. Hardin Jan 07 2011

Status

approved