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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.
1
24, 1488, 136243, 10443081, 817293052, 64449537503, 5061444598545, 397834775050740, 31270867431167972, 2457732853480046455, 193174081619843169146, 15183059890219083012785, 1193352525118970918791175
OFFSET
1,1
COMMENTS
Column 6 of A203975.
LINKS
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 08 2012
STATUS
approved