a(1) = 1; thereafter a(n+1) = a(n)^2 + n.A028300a(1) = 1; thereafter a(n+1) = a(n)^2 + n.Terms a(0) =1a(1) =2a(2) =6a(3) =39a(4) =1525a(5) =2325630External referencesoeis: A028300