Becomes prime after exactly 8 iterations of f(x) = sum of prime factors of x.

Terms

a(0) =13682a(1) =18002a(2) =19137a(3) =22934a(4) =24014a(5) =24787a(6) =27364a(7) =27849a(8) =30062a(9) =30993a(10) =32577a(11) =33477a(12) =35410a(13) =35798a(14) =36004a(15) =36398a(16) =36706a(17) =39206a(18) =43333a(19) =43917a(20) =44493a(21) =45219a(22) =45734a(23) =45868a(24) =46142a(25) =46405a(26) =48028a(27) =49546a(28) =50642a(29) =51295