a(0) = 4; for n >= 0, a(n+1) = number of partitions of a(n).

A072215

a(0) = 4; for n >= 0, a(n+1) = number of partitions of a(n).

Terms

    a(0) =4a(1) =5a(2) =7a(3) =15a(4) =176a(5) =476715857290

External references