A204523 Number of (n+2)X4 0..3 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly one way, and new values 0..3 introduced in row major order

99975, 6099132, 410928067, 21954021414, 1313498195386, 82886770772555, 4890159721211038, 294294300117964072, 18042431883156922320, 1087890222088303122556, 65748461084953303391874

Offset

1,1

Comments

Column 2 of A204525

Links

R. H. Hardin, Table of n, a(n) for n = 1..50

Example

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

Crossrefs

Sequence in context: A232188 A032428 A370795 * A182698 A033427 A027663

Adjacent sequences: A204520 A204521 A204522 * A204524 A204525 A204526

Keyword

nonn

Author

R. H. Hardin Jan 15 2012

Status

approved