A186794 Half the number of (n+2)X9 binary arrays with each 3X3 subblock having a sum in 2..7

53808589, 23402344941, 10131963654512, 4391582264258067, 1903184045712789082, 824819184923132441809, 357466055151669297136736, 154921287528965130422293553, 67140931189826904910835734315

Offset

1,1

Comments

Column 7 of A186796

Links

R. H. Hardin, Table of n, a(n) for n = 1..19

Example

Some solutions for 4X9 with a(1,1)=0
..0..0..0..0..0..0..0..1..1....0..0..0..0..0..0..0..0..1
..0..0..1..0..0..1..1..1..0....0..0..1..0..1..1..1..1..0
..0..0..1..0..1..0..1..1..0....0..0..1..0..0..1..1..1..1
..0..0..0..0..0..1..1..0..0....0..0..0..0..0..0..0..0..0

Crossrefs

Sequence in context: A186596 A205180 A216007 * A345719 A346360 A234794

Adjacent sequences: A186791 A186792 A186793 * A186795 A186796 A186797

Keyword

nonn

Author

R. H. Hardin Feb 26 2011

Status

approved