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A210171 Number of (n+1)X6 0..3 arrays containing all values 0..3 with every 2X2 subblock having two or four distinct values, and new values 0..3 introduced in row major order 1
7545, 679253, 55406625, 4397691548, 343737526300, 26640186018717, 2054059689574097, 157885132526126296, 12112997279818925338, 928256678269308585687, 71086500262054721658815, 5441614895591983767635526 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A210174

LINKS

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

EXAMPLE

Some solutions for n=4

..0..0..0..0..1..0....0..0..0..0..0..0....0..1..2..1..0..2....0..0..1..2..1..1

..2..2..0..1..0..0....0..1..1..1..0..1....3..2..2..1..1..3....0..1..1..1..1..2

..0..0..0..0..1..0....1..0..1..0..0..0....1..0..2..2..2..0....1..1..0..0..0..3

..1..0..3..3..2..3....1..0..0..1..1..1....1..0..0..2..0..2....3..1..1..0..1..2

..0..0..0..3..2..2....1..0..2..3..1..3....0..0..3..1..3..1....2..0..1..0..0..3

CROSSREFS

Sequence in context: A185749 A077096 A031137 * A234987 A157322 A172443

Adjacent sequences:  A210168 A210169 A210170 * A210172 A210173 A210174

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 18 2012

STATUS

approved

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Last modified May 16 21:13 EDT 2022. Contains 353720 sequences. (Running on oeis4.)