A076531 - cp's OEIS frontend

A076531 Numbers n such that sopf(phi(n)) = phi(sopf(n)), where sopf(x) = sum of the distinct prime factors of x.

n	a(n)
1	3
2	203
3	322
4	377
5	644
6	851
7	931
8	1166
9	1211
10	1288
11	1421
12	1666
13	1815
14	1862
15	2332
16	2576
17	3332
18	3724
19	4664
20	4830
21	5152
22	6401
23	6517
24	6664
25	7042
26	7241
27	7448
28	9075
29	9328
30	9555
31	9660
32	9845
33	9922
34	9947
35	10304
36	10465
37	11662
38	11814
39	11830
40	12558
41	12903
42	13034

[3, 203, 322, 377, 644, 851, 931, 1166, 1211, 1288, 1421, 1666, 1815, 1862, 2332, 2576, 3332, 3724, 4664, 4830, 5152, 6401, 6517, 6664, 7042, 7241, 7448, 9075, 9328, 9555, 9660, 9845, 9922, 9947, 10304, 10465, 11662, 11814, 11830, 12558, 12903, 13034]

cp's OEIS Frontend

A076531 Numbers n such that sopf(phi(n)) = phi(sopf(n)), where sopf(x) = sum of the distinct prime factors of x.

Table of values

List of values