Number of arrangements of 10 nonzero numbers x(i) in -n..n with the sum of x(i)*x(i+1) equal to zero.
A188256
Number of arrangements of 10 nonzero numbers x(i) in -n..n with the sum of x(i)*x(i+1) equal to zero.
Terms
- a(0) =0a(1) =57808a(2) =1657632a(3) =20265640a(4) =123729664a(5) =591604824a(6) =2026547348a(7) =6250275112a(8) =16132348896a(9) =38938013924
External references
- oeis: A188256