A210142 Number of (n+1)X8 0..3 arrays containing all values 0..3 with every 2X2 subblock having one, two or four distinct values, and new values 0..3 introduced in row major order

638065, 341220491, 179321691502, 94235638705314, 49393019753138539, 25825997316374317466, 13475932703981552094893, 7020890990431993670518416, 3653843245510021674190564343, 1900120194269804888137156836507

Offset

1,1

Comments

Column 7 of A210143

Links

R. H. Hardin, Table of n, a(n) for n = 1..164

Example

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

Crossrefs

Sequence in context: A185476 A237903 A250674 * A183745 A113951 A257194

Adjacent sequences: A210139 A210140 A210141 * A210143 A210144 A210145

Keyword

nonn

Author

R. H. Hardin Mar 17 2012

Status

approved