A210317 Number of (n+1)X6 0..3 arrays containing all values 0..3 with every 2X2 subblock having two or three distinct values, and new values 0..3 introduced in row major order

319485, 863174816, 2073034512148, 4840385164324833, 11219641807667569855, 25955987547567321154448, 60016709910309693653046556, 138754495029874681775639407135, 320779044537811087561914806499247

Offset

1,1

Comments

Column 5 of A210320

Links

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

Example

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

Crossrefs

Sequence in context: A202468 A251528 A253341 * A205931 A236318 A348827

Adjacent sequences: A210314 A210315 A210316 * A210318 A210319 A210320

Keyword

nonn

Author

R. H. Hardin Mar 20 2012

Status

approved