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

7545, 679253, 55406625, 4397691548, 343737526300, 26640186018717, 2054059689574097, 157885132526126296, 12112997279818925338, 928256678269308585687, 71086500262054721658815, 5441614895591983767635526

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