Number of -6..6 arrays x(0..n+2) of n+3 elements with zero sum and no two or three adjacent elements summing to zero.
A200428
Number of -6..6 arrays x(0..n+2) of n+3 elements with zero sum and no two or three adjacent elements summing to zero.
Terms
- a(0) =940a(1) =10250a(2) =98052a(3) =955602a(4) =10217182a(5) =111101654a(6) =1206988576a(7) =13090995142a(8) =142480007436
External references
- oeis: A200428