A209968 Number of (n+1)X8 0..3 arrays containing all values 0..3 with every 2X2 subblock having one or two distinct values, and new values 0..3 introduced in row major order

144945, 56080379, 22419183624, 9585247795332, 4082540189707757, 1725096441495004196, 721612821437109284511, 299146037912951362959562, 123075110690359925477005111, 50324532317054668259634809719

Offset

1,1

Comments

Column 7 of A209969

Links

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

Example

Some solutions for n=4
..0..0..0..0..0..1..1..1....0..0..0..0..0..0..0..1....0..0..0..0..1..0..0..1
..1..0..0..0..0..0..0..0....0..2..2..2..2..2..0..0....0..1..0..0..1..0..0..1
..0..0..1..0..0..1..0..0....0..0..0..0..2..2..0..2....1..0..0..0..1..0..0..0
..2..0..0..0..0..0..0..3....1..0..1..0..2..2..2..0....1..0..2..0..1..0..2..2
..2..0..1..0..3..3..0..0....0..0..1..0..2..3..2..2....0..0..2..0..1..0..2..3

Crossrefs

Sequence in context: A204641 A133324 A348808 * A233915 A237297 A204527

Adjacent sequences: A209965 A209966 A209967 * A209969 A209970 A209971

Keyword

nonn

Author

R. H. Hardin Mar 16 2012

Status

approved