Number of zero-sum nX3 -1..1 arrays with every element unequal to at most two horizontal and vertical neighbors.
A202042
Number of zero-sum nX3 -1..1 arrays with every element unequal to at most two horizontal and vertical neighbors.
Terms
- a(0) =7a(1) =73a(2) =415a(3) =2921a(4) =19541a(5) =149149a(6) =1067983a(7) =8193025a(8) =60897081a(9) =469758219a(10) =3566405667a(11) =27631630057a(12) =212463113105
External references
- oeis: A202042