Number of arrangements of 9 numbers x(i) in -n..n with the sum of x(i)*x(i+1) equal to zero.
A188364
Number of arrangements of 9 numbers x(i) in -n..n with the sum of x(i)*x(i+1) equal to zero.
Terms
- a(0) =4671a(1) =173409a(2) =1763151a(3) =10396729a(4) =40629247a(5) =136061137a(6) =355442823a(7) =870473329a(8) =1876439327a(9) =3821007601a(10) =7047842559
External references
- oeis: A188364