Becomes prime after exactly 7 iterations of f(x) = sum of prime factors of x.

Terms

a(0) =1774a(1) =2566a(2) =3548a(3) =4497a(4) =5132a(5) =6382a(6) =6843a(7) =7096a(8) =7538a(9) =8043a(10) =8882a(11) =8902a(12) =9003a(13) =9286a(14) =10264a(15) =10334a(16) =10862a(17) =10997a(18) =11019a(19) =11162a(20) =11469a(21) =11490a(22) =12009a(23) =12226a(24) =12442a(25) =12507a(26) =12764a(27) =12817a(28) =12842a(29) =13215