A058825 - cp's OEIS frontend

A058825 Numbers which are both totients and cototients.

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	12
7	16
8	18
9	20
10	22
11	24
12	28
13	30
14	32
15	36
16	40
17	42
18	44
19	46
20	48
21	54
22	56
23	60
24	64
25	66
26	70
27	72
28	78
29	80
30	82
31	84
32	88
33	92
34	96
35	102
36	104
37	106
38	108
39	110
40	112
41	120
42	126
43	128
44	132
45	136
46	138
47	140
48	144
49	148
50	150
51	156
52	160
53	162
54	164
55	166
56	168
57	176
58	178
59	180
60	184
61	190

[1, 2, 4, 6, 8, 12, 16, 18, 20, 22, 24, 28, 30, 32, 36, 40, 42, 44, 46, 48, 54, 56, 60, 64, 66, 70, 72, 78, 80, 82, 84, 88, 92, 96, 102, 104, 106, 108, 110, 112, 120, 126, 128, 132, 136, 138, 140, 144, 148, 150, 156, 160, 162, 164, 166, 168, 176, 178, 180, 184, 190]

cp's OEIS Frontend

A058825 Numbers which are both totients and cototients.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	12
7	16
8	18
9	20
10	22
11	24
12	28
13	30
14	32
15	36
16	40
17	42
18	44
19	46
20	48
21	54
22	56
23	60
24	64
25	66
26	70
27	72
28	78
29	80
30	82
31	84
32	88
33	92
34	96
35	102
36	104
37	106
38	108
39	110
40	112
41	120
42	126
43	128
44	132
45	136
46	138
47	140
48	144
49	148
50	150
51	156
52	160
53	162
54	164
55	166
56	168
57	176
58	178
59	180
60	184
61	190

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	12
7	16
8	18
9	20
10	22
11	24
12	28
13	30
14	32
15	36
16	40
17	42
18	44
19	46
20	48
21	54
22	56
23	60
24	64
25	66
26	70
27	72
28	78
29	80
30	82
31	84
32	88
33	92
34	96
35	102
36	104
37	106
38	108
39	110
40	112
41	120
42	126
43	128
44	132
45	136
46	138
47	140
48	144
49	148
50	150
51	156
52	160
53	162
54	164
55	166
56	168
57	176
58	178
59	180
60	184
61	190

n	a(n)
1	1
2	2
3	4
4	6
5	8
6	12
7	16
8	18
9	20
10	22
11	24
12	28
13	30
14	32
15	36
16	40
17	42
18	44
19	46
20	48
21	54
22	56
23	60
24	64
25	66
26	70
27	72
28	78
29	80
30	82
31	84
32	88
33	92
34	96
35	102
36	104
37	106
38	108
39	110
40	112
41	120
42	126
43	128
44	132
45	136
46	138
47	140
48	144
49	148
50	150
51	156
52	160
53	162
54	164
55	166
56	168
57	176
58	178
59	180
60	184
61	190