a(1) = 1, a(2) = 2, a(n) = sum of products of previous terms taking n-2 at a time.
A061482
a(1) = 1, a(2) = 2, a(n) = sum of products of previous terms taking n-2 at a time.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =11a(4) =127a(5) =16195a(6) =262286407
External references
- oeis: A061482