A204527 Number of (n+2)X4 0..3 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..3 introduced in row major order

145760, 15713085, 1803801730, 161070061826, 16182427177333, 1639434747658238, 159950005645169941, 15886971277197776321, 1579652667608040172323, 156196326978244203268552, 15486063123621706338330719

Offset

1,1

Comments

Column 2 of A204530

Links

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

Example

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

Crossrefs

Sequence in context: A209968 A233915 A237297 * A345753 A110084 A224587

Adjacent sequences: A204524 A204525 A204526 * A204528 A204529 A204530

Keyword

nonn

Author

R. H. Hardin Jan 15 2012

Status

approved