A206793 Number of nX4 0..3 arrays avoiding the pattern z z+1 z in any row, column, diagonal or antidiagonal

232, 53824, 8683735, 1382766472, 222851712982, 35954795295641, 5798927126392378, 935195769843015103, 150819269855143535380, 24322790361067935901218, 3922570242526007854435915

Offset

1,1

Comments

Column 4 of A206797

Links

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

Example

Some solutions for n=4
..0..2..2..1....2..2..1..0....1..0..2..1....1..0..3..2....1..3..2..1
..1..0..1..1....3..2..2..0....0..1..1..2....1..1..0..0....1..2..2..1
..2..2..1..0....3..3..3..0....2..1..0..3....3..1..3..0....0..2..0..3
..0..3..0..1....1..3..3..3....1..0..1..1....1..0..1..3....0..0..2..1

Crossrefs

Sequence in context: A279660 A188401 A307827 * A206970 A206976 A206963

Adjacent sequences: A206790 A206791 A206792 * A206794 A206795 A206796

Keyword

nonn

Author

R. H. Hardin Feb 12 2012

Status

approved