A206796 Number of nX7 0..3 arrays avoiding the pattern z z+1 z in any row, column, diagonal or antidiagonal

12793, 163660849, 988006480837, 5798927126392378, 35167047469699730422

Offset

1,1

Comments

Column 7 of A206797

Links

Table of n, a(n) for n=1..5.

Example

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

Crossrefs

Sequence in context: A217184 A184784 A184780 * A206966 A209091 A207133

Adjacent sequences: A206793 A206794 A206795 * A206797 A206798 A206799

Keyword

nonn

Author

R. H. Hardin Feb 12 2012

Status

approved