A210412 Number of (n+1)X8 0..3 arrays with every 2X2 subblock having three or four distinct values, and new values 0..3 introduced in row major order

13035456, 84204544256, 525218223843536, 3289463792785895520, 20592266925119437726832, 128916198765144572103220336, 807064033391096001306908915584, 5052529194034453788657081337165632

Offset

1,1

Comments

Column 7 of A210413

Links

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

Example

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

Crossrefs

Sequence in context: A256734 A237034 A210182 * A048937 A257269 A283274

Adjacent sequences: A210409 A210410 A210411 * A210413 A210414 A210415

Keyword

nonn

Author

R. H. Hardin Mar 21 2012

Status

approved