a(0) = 1; for n > 0, a(n) = Sum_{k=0..n-1} prime(a(k)) * prime(a(n-k-1)).
A338816
a(0) = 1; for n > 0, a(n) = Sum_{k=0..n-1} prime(a(k)) * prime(a(n-k-1)).
Terms
- a(0) =1a(1) =4a(2) =28a(3) =477a(4) =15054a(5) =716619a(6) =46386636a(7) =3829544473a(8) =386956394842
External references
- oeis: A338816