A206211 Number of (n+1)X5 0..2 arrays with every 2X3 or 3X2 subblock having exactly two equal edges, and new values 0..2 introduced in row major order

594, 992, 2224, 8136, 21984, 74080, 274320, 747456, 2518720, 9326880, 25413504, 85636480, 317113920, 864059136, 2911640320, 10781873280, 29378010624, 98995770880, 366583691520, 998852361216, 3365856209920, 12463845511680

Offset

1,1

Comments

Column 4 of A206215

Links

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

Formula

Empirical: a(n) = 34*a(n-3) for n>7

Example

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

Crossrefs

Sequence in context: A025338 A025330 A035138 * A200434 A241876 A252534

Adjacent sequences: A206208 A206209 A206210 * A206212 A206213 A206214

Keyword

nonn

Author

R. H. Hardin Feb 04 2012

Status

approved