A210182 Number of (n+1)X8 0..3 arrays containing all values 0..3 with every 2X2 subblock having three or four distinct values, and new values 0..3 introduced in row major order

12988416, 84200356757, 525217898009080, 3289463766677655180, 20592266923035456358072, 128916198764977919097970016, 807064033391082670768444038930, 5052529194034452722003155551168526

Offset

1,1

Comments

Column 7 of A210183

Links

R. H. Hardin, Table of n, a(n) for n = 1..151

Example

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

Crossrefs

Sequence in context: A251472 A256734 A237034 * A210412 A048937 A257269

Adjacent sequences: A210179 A210180 A210181 * A210183 A210184 A210185

Keyword

nonn

Author

R. H. Hardin Mar 18 2012

Status

approved