a(0) = 2; for n >= 0, a(n+1) = a(n)*(a(n)+1)/2.
A007501
a(0) = 2; for n >= 0, a(n+1) = a(n)*(a(n)+1)/2.
Terms
- a(0) =2a(1) =3a(2) =6a(3) =21a(4) =231a(5) =26796a(6) =359026206
External references
- oeis: A007501
A007501
a(0) = 2; for n >= 0, a(n+1) = a(n)*(a(n)+1)/2.