A210306 Number of (n+1)X6 0..3 arrays containing all values 0..3 with every 2X2 subblock having one or three distinct values, and new values 0..3 introduced in row major order.

45890, 14976529, 4628067519, 1424160340819, 437971830335043, 134683159775208043, 41416867662718913763, 12736232784299293881403, 3916559143469508559155251, 1204393458499346150807758187

Offset

1,1

Comments

Column 5 of A210309

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

Crossrefs

Sequence in context: A031841 A031635 A159725 * A223368 A061405 A061529

Adjacent sequences: A210303 A210304 A210305 * A210307 A210308 A210309

Keyword

nonn

Author

R. H. Hardin, Mar 19 2012

Status

approved