Starting with n, repeatedly sum prime factors (with multiplicity) until reaching 0 or a fixed point. Then a(n) is the fixed point (or 0).
A029908
Starting with n, repeatedly sum prime factors (with multiplicity) until reaching 0 or a fixed point. Then a(n) is the fixed point (or 0).
Terms
- a(0) =0a(1) =2a(2) =3a(3) =4a(4) =5a(5) =5a(6) =7a(7) =5a(8) =5a(9) =7a(10) =11a(11) =7a(12) =13a(13) =5a(14) =5a(15) =5a(16) =17a(17) =5a(18) =19a(19) =5a(20) =7a(21) =13a(22) =23a(23) =5a(24) =7a(25) =5a(26) =5a(27) =11a(28) =29a(29) =7
External references
- oeis: A029908