A203973 Number of n X 6 0..2 arrays with every 1 immediately preceded by 0 to the left or above, and every 2 immediately preceded by 0 1 to the left or above.

24, 1488, 136243, 10443081, 817293052, 64449537503, 5061444598545, 397834775050740, 31270867431167972, 2457732853480046455, 193174081619843169146, 15183059890219083012785, 1193352525118970918791175

Offset

1,1

Comments

Column 6 of A203975.

Links

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

Example

Some solutions for n=2
..0..1..0..1..0..0....0..0..0..0..0..0....0..1..0..0..1..2....0..1..0..0..0..1
..0..1..2..0..1..0....0..1..2..0..1..2....0..0..1..2..0..0....0..1..1..0..1..0

Crossrefs

Cf. A203975.

Sequence in context: A099060 A035174 A288955 * A063885 A019284 A333042

Adjacent sequences: A203970 A203971 A203972 * A203974 A203975 A203976

Keyword

nonn

Author

R. H. Hardin, Jan 08 2012

Status

approved