A048128 - cp's OEIS frontend

A048128 Becomes prime or 4 after exactly 6 iterations of f(x) = sum of prime factors of x.

n	a(n)
1	134
2	177
3	213
4	262
5	309
6	334
7	339
8	398
9	445
10	469
11	505
12	514
13	534
14	606
15	670
16	723
17	742
18	753
19	758
20	763
21	788
22	793
23	802
24	804
25	817
26	818
27	849
28	865
29	913
30	914
31	915
32	926
33	961
34	976
35	998
36	1011
37	1016
38	1038
39	1052
40	1060
41	1090
42	1098
43	1101
44	1115
45	1143
46	1154
47	1165
48	1195

[134, 177, 213, 262, 309, 334, 339, 398, 445, 469, 505, 514, 534, 606, 670, 723, 742, 753, 758, 763, 788, 793, 802, 804, 817, 818, 849, 865, 913, 914, 915, 926, 961, 976, 998, 1011, 1016, 1038, 1052, 1060, 1090, 1098, 1101, 1115, 1143, 1154, 1165, 1195]

cp's OEIS Frontend

A048128 Becomes prime or 4 after exactly 6 iterations of f(x) = sum of prime factors of x.

Table of values

List of values