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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 1
144945, 56080379, 22419183624, 9585247795332, 4082540189707757, 1725096441495004196, 721612821437109284511, 299146037912951362959562, 123075110690359925477005111, 50324532317054668259634809719 (list; graph; refs; listen; history; text; internal format)
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: A236995 A204641 A133324 * A233915 A237297 A204527

Adjacent sequences:  A209965 A209966 A209967 * A209969 A209970 A209971

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 16 2012

STATUS

approved

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Last modified July 28 17:15 EDT 2021. Contains 346335 sequences. (Running on oeis4.)