A110172 - cp's OEIS frontend

A110172 Conjectured numbers j such that phi(j) + phi(k) = phi(j+k) has no solution k, where phi is Euler's totient function.

n	a(n)
1	3
2	15
3	21
4	39
5	45
6	57
7	69
8	105
9	147
10	165
11	177
12	195
13	213
14	273
15	285
16	315
17	345
18	393
19	399
20	465
21	489
22	525
23	585
24	615
25	633
26	645
27	651
28	681
29	717
30	777
31	807
32	813
33	843
34	855
35	879
36	885
37	903
38	915
39	933
40	939
41	1005
42	1035
43	1041
44	1065
45	1095
46	1149
47	1263
48	1281
49	1293
50	1317
51	1395

[3, 15, 21, 39, 45, 57, 69, 105, 147, 165, 177, 195, 213, 273, 285, 315, 345, 393, 399, 465, 489, 525, 585, 615, 633, 645, 651, 681, 717, 777, 807, 813, 843, 855, 879, 885, 903, 915, 933, 939, 1005, 1035, 1041, 1065, 1095, 1149, 1263, 1281, 1293, 1317, 1395]

cp's OEIS Frontend

A110172 Conjectured numbers j such that phi(j) + phi(k) = phi(j+k) has no solution k, where phi is Euler's totient function.

Table of values

List of values