Consider trajectory of n under repeated applications of the function f(x) = 'Sum of the prime factors of x (with multiplicity)' (see A029908). Sequence gives composite numbers n that end at a prime m that divides n and m is greater than any m's seen already.
A084931
Consider trajectory of n under repeated applications of the function f(x) = 'Sum of the prime factors of x (with multiplicity)' (see A029908). Sequence gives composite numbers n that end at a prime m that divides n and m is greater than any m's seen already.
Terms
- a(0) =15a(1) =21a(2) =182a(3) =494a(4) =1219a(5) =2852a(6) =3182a(7) =9782a(8) =19339a(9) =19982a(10) =22454a(11) =72836a(12) =76814a(13) =102134a(14) =156782a(15) =192182a(16) =423182a(17) =750979a(18) =758894a(19) =1364534a(20) =1465454a(21) =1548782a(22) =2376182a(23) =3379982a(24) =4066934a(25) =4204982
External references
- oeis: A084931