A067261 - cp's OEIS frontend

A067261 Numbers n such that sigma(n+1)=3*phi(n).

n	a(n)
1	1
2	4
3	5
4	9
5	10
6	21
7	32
8	34
9	45
10	55
11	65
12	68
13	70
14	129
15	153
16	160
17	176
18	183
19	203
20	245
21	340
22	370
23	407
24	441
25	550
26	580
27	635
28	741
29	765
30	806
31	845
32	965
33	1011
34	1025
35	1089
36	1166
37	1247
38	1292
39	1505
40	1508
41	1840
42	2271
43	2402
44	2584
45	2590
46	3285
47	3604
48	4065
49	4223
50	4832
51	5339

[1, 4, 5, 9, 10, 21, 32, 34, 45, 55, 65, 68, 70, 129, 153, 160, 176, 183, 203, 245, 340, 370, 407, 441, 550, 580, 635, 741, 765, 806, 845, 965, 1011, 1025, 1089, 1166, 1247, 1292, 1505, 1508, 1840, 2271, 2402, 2584, 2590, 3285, 3604, 4065, 4223, 4832, 5339]

cp's OEIS Frontend

A067261 Numbers n such that sigma(n+1)=3*phi(n).

Table of values

List of values