A210181 Number of (n+1)X7 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

1165620, 2632469015, 5718695139568, 12464481048826696, 27156404404201709994, 59168572185919156908468, 128916198764977919097970016, 280882175302896412528199673868, 611985080884296074533935641104282

Offset

1,1

Comments

Column 6 of A210183

Links

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

Example

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

Crossrefs

Sequence in context: A339982 A234554 A192104 * A204307 A233664 A322690

Adjacent sequences: A210178 A210179 A210180 * A210182 A210183 A210184

Keyword

nonn

Author

R. H. Hardin Mar 18 2012

Status

approved