Number of zero-sum nX3 -3..3 arrays with every element equal to at least one horizontal or vertical neighbor.
A202132
Number of zero-sum nX3 -3..3 arrays with every element equal to at least one horizontal or vertical neighbor.
Terms
- a(0) =1a(1) =123a(2) =1857a(3) =135315a(4) =3767643a(5) =227460779a(6) =8550543057a(7) =461409633685
External references
- oeis: A202132