A084931 - cp's OEIS frontend

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.

n	a(n)
1	15
2	21
3	182
4	494
5	1219
6	2852
7	3182
8	9782
9	19339
10	19982
11	22454
12	72836
13	76814
14	102134
15	156782
16	192182
17	423182
18	750979
19	758894
20	1364534
21	1465454
22	1548782
23	2376182
24	3379982
25	4066934
26	4204982

[15, 21, 182, 494, 1219, 2852, 3182, 9782, 19339, 19982, 22454, 72836, 76814, 102134, 156782, 192182, 423182, 750979, 758894, 1364534, 1465454, 1548782, 2376182, 3379982, 4066934, 4204982]

cp's OEIS Frontend

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.

Table of values

List of values