A204886 Number of (n+2)X4 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..2 introduced in row major order

34925, 1604961, 75253867, 3254488094, 145204264396, 6492423809138, 288337386104808, 12837532389793128, 571683276838359318, 25444029720616660660, 1132668867659263334867, 50423050639628048319639

Offset

1,1

Comments

Column 2 of A204889

Links

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

Example

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

Crossrefs

Sequence in context: A236727 A233815 A247695 * A257755 A230976 A085847

Adjacent sequences: A204883 A204884 A204885 * A204887 A204888 A204889

Keyword

nonn

Author

R. H. Hardin Jan 20 2012

Status

approved