A206970 Number of nX4 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, 8685113, 1391081032, 221715091199, 35350565625684, 5637076828393230, 898731865023533945, 143270289925351485445, 22838799155002812398101, 3640700346812282938066170

Offset

1,1

Comments

Column 4 of A206974

Links

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

Example

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

Crossrefs

Sequence in context: A188401 A307827 A206793 * A206976 A206963 A206573

Adjacent sequences: A206967 A206968 A206969 * A206971 A206972 A206973

Keyword

nonn

Author

R. H. Hardin Feb 14 2012

Status

approved