Number of arrangements of n+1 numbers x(i) in -8..8 with the sum of x(i)*x(i+1) equal to zero.
A188357
Number of arrangements of n+1 numbers x(i) in -8..8 with the sum of x(i)*x(i+1) equal to zero.
Terms
- a(0) =33a(1) =561a(2) =2161a(3) =34625a(4) =283893a(5) =4409889a(6) =55520361a(7) =870473329a(8) =12869671489a(9) =204942934341
External references
- oeis: A188357