a(1) = 1, a(n) = prime(a(n-1)) + 2*a(n-1).

A179511

a(1) = 1, a(n) = prime(a(n-1)) + 2*a(n-1).

Terms

    a(0) =1a(1) =4a(2) =15a(3) =77a(4) =543a(5) =5005a(6) =58671a(7) =845879a(8) =14636427a(9) =297816383a(10) =7007621133a(11) =188075111317

External references