A206976 Number of 4Xn 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal

232, 53824, 8688551, 1391081032, 223912418544, 36046917008352, 5803617279636252, 934395050456234307, 150438211960740083862, 24220640150272628859680, 3899529391670309221320411

Offset

1,1

Comments

Row 4 of A206974

Links

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

Example

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

Crossrefs

Sequence in context: A307827 A206793 A206970 * A206963 A206573 A207578

Adjacent sequences: A206973 A206974 A206975 * A206977 A206978 A206979

Keyword

nonn

Author

R. H. Hardin Feb 14 2012

Status

approved