Start with n; if prime, stop; repeatedly sum prime factors (counted with multiplicity) and add 1, until reach 1, 6 or a prime.
A029910
Start with n; if prime, stop; repeatedly sum prime factors (counted with multiplicity) and add 1, until reach 1, 6 or a prime.
Terms
- a(0) =1a(1) =2a(2) =3a(3) =5a(4) =5a(5) =6a(6) =7a(7) =7a(8) =7a(9) =7a(10) =11a(11) =7a(12) =13a(13) =7a(14) =7a(15) =7a(16) =17a(17) =7a(18) =19a(19) =7a(20) =11a(21) =7a(22) =23a(23) =7a(24) =11a(25) =7a(26) =7a(27) =7a(28) =29a(29) =11
External references
- oeis: A029910