Number of zero-sum nX2 -3..3 arrays with every element equal to at least one horizontal or vertical neighbor.
A202131
Number of zero-sum nX2 -3..3 arrays with every element equal to at least one horizontal or vertical neighbor.
Terms
- a(0) =1a(1) =13a(2) =123a(3) =1205a(4) =12287a(5) =135179a(6) =1493247a(7) =16814401a(8) =192346557a(9) =2225951035a(10) =26017190841a(11) =306761764259
External references
- oeis: A202131