A203106 Number of nX6 binary arrays with every 1 immediately preceded by 0 0 to the left or above

6, 36, 1125, 20459, 290787, 4984843, 86512536, 1422678297, 23676061927, 398569091990, 6665187099447, 111312476711916, 1863171147095028, 31177909529015664, 521431754829287284, 8722671700852650274

Offset

1,1

Comments

Column 6 of A203108

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..0..0..1..0..0..0....0..0..0..0..0..0....0..0..0..0..0..1....0..0..0..0..0..1
..0..0..0..1..0..0....0..0..0..1..0..0....0..0..0..0..0..1....0..0..0..0..0..1
..1..0..0..0..0..1....1..0..1..0..1..0....0..0..1..0..0..0....0..0..0..0..0..1
..0..1..0..0..0..0....0..1..0..0..0..1....1..1..0..0..0..1....0..0..0..0..0..0

Crossrefs

Sequence in context: A244841 A268161 A082027 * A351796 A069031 A061234

Adjacent sequences: A203103 A203104 A203105 * A203107 A203108 A203109

Keyword

nonn

Author

R. H. Hardin Dec 29 2011

Status

approved