A206964 Number of nX5 0..3 arrays avoiding the pattern z z+1 z in any row, column or nw-to-se diagonal.

883, 779689, 480085367, 291206601222, 178334417556473, 109307204667939468, 66983278347851911670, 41045386720652187134446, 25151502348643422168781722, 15412197432472742334651061428, 9444200548064341094776112228610

Offset

1,1

Comments

Column 5 of A206967

Links

R. H. Hardin, Table of n, a(n) for n = 1..95

Example

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

Crossrefs

Sequence in context: A023312 A129469 A206794 * A209089 A207131 A253507

Adjacent sequences: A206961 A206962 A206963 * A206965 A206966 A206967

Keyword

nonn

Author

R. H. Hardin, Feb 14 2012

Status

approved