A201987 Number of nX5 zero-sum -3..3 arrays with rows and columns lexicographically nondecreasing.

32, 139471, 803133854, 3674187761233, 13189629907532856, 38785259210265819578

Offset: 1

Author

R. H. Hardin Dec 07 2011

Keywords

• nonn

Comments

Column 5 of A201989

Examples

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