login
A204347
Number of (n+2)X6 0..3 arrays with no 3X3 subblock having three equal diagonal elements or three equal antidiagonal elements, and new values 0..3 introduced in row major order
1
1708802980, 4524628081600, 11860456910608960, 31112427702110512128, 81625476908305470240676, 214143463182606762676673040, 561805129589614687626505061188, 1473894249933463522499248333901983
OFFSET
1,1
COMMENTS
Column 4 of A204351
LINKS
EXAMPLE
Some solutions for n=3
..0..0..0..0..1..0....0..0..1..0..0..2....0..0..0..0..0..0....0..0..0..0..0..0
..0..2..2..1..2..1....1..1..0..0..3..1....0..0..1..0..0..1....0..0..0..0..0..0
..1..3..2..0..3..3....3..1..3..1..3..2....1..0..1..1..1..1....1..1..2..1..1..1
..0..1..3..3..1..1....2..1..2..3..2..0....2..0..1..2..3..3....2..1..3..2..1..3
..2..1..2..0..2..0....1..0..0..1..1..2....3..2..1..0..0..3....0..3..2..0..3..2
CROSSREFS
Sequence in context: A202573 A071372 A129474 * A228376 A015411 A034649
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 14 2012
STATUS
approved