A204942 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 exactly one way, and new values 0..2 introduced in row major order

16032, 328910, 6907192, 135480703, 2795434368, 58695095028, 1207470043135, 25041308069922, 522156611063241, 10836026931458739, 225099736606852873, 4683065466351804274, 97330031208382877298, 2022937940387433629191

Offset

1,1

Comments

Column 2 of A204945

Links

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

Example

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

Crossrefs

Sequence in context: A151811 A151877 A187854 * A163112 A202420 A031839

Adjacent sequences: A204939 A204940 A204941 * A204943 A204944 A204945

Keyword

nonn

Author

R. H. Hardin Jan 20 2012

Status

approved