A067880 - cp's OEIS frontend

A067880 Numbers k such that phi(k) = phi(sigma(k)-k).

n	a(n)
1	2
2	4
3	6
4	10
5	16
6	28
7	78
8	114
9	152
10	165
11	186
12	222
13	224
14	238
15	256
16	402
17	496
18	654
19	704
20	738
21	762
22	834
23	942
24	1086
25	1194
26	1266
27	1456
28	1485
29	1665
30	1722
31	1842
32	1972
33	2022
34	2132
35	2223
36	2274
37	2454
38	2528
39	2754
40	2922
41	2994
42	3246
43	3426
44	3462
45	3472
46	3786
47	4506
48	4614

[2, 4, 6, 10, 16, 28, 78, 114, 152, 165, 186, 222, 224, 238, 256, 402, 496, 654, 704, 738, 762, 834, 942, 1086, 1194, 1266, 1456, 1485, 1665, 1722, 1842, 1972, 2022, 2132, 2223, 2274, 2454, 2528, 2754, 2922, 2994, 3246, 3426, 3462, 3472, 3786, 4506, 4614]

cp's OEIS Frontend

A067880 Numbers k such that phi(k) = phi(sigma(k)-k).

Table of values

List of values