A333019 - cp's OEIS frontend

A333019 Numbers k such that both k and k + 2 are totient numbers (A002202).

n	a(n)
1	2
2	4
3	6
4	8
5	10
6	16
7	18
8	20
9	22
10	28
11	30
12	40
13	42
14	44
15	46
16	52
17	54
18	56
19	58
20	64
21	70
22	78
23	80
24	82
25	100
26	102
27	104
28	106
29	108
30	110
31	126
32	128
33	130
34	136
35	138
36	148
37	160
38	162
39	164
40	166
41	176
42	178
43	190
44	196
45	198
46	208
47	210
48	220
49	222
50	224
51	226
52	238
53	250
54	260
55	262
56	268
57	270
58	280

[2, 4, 6, 8, 10, 16, 18, 20, 22, 28, 30, 40, 42, 44, 46, 52, 54, 56, 58, 64, 70, 78, 80, 82, 100, 102, 104, 106, 108, 110, 126, 128, 130, 136, 138, 148, 160, 162, 164, 166, 176, 178, 190, 196, 198, 208, 210, 220, 222, 224, 226, 238, 250, 260, 262, 268, 270, 280]

cp's OEIS Frontend

A333019 Numbers k such that both k and k + 2 are totient numbers (A002202).

Table of values

List of values

n	a(n)
1	2
2	4
3	6
4	8
5	10
6	16
7	18
8	20
9	22
10	28
11	30
12	40
13	42
14	44
15	46
16	52
17	54
18	56
19	58
20	64
21	70
22	78
23	80
24	82
25	100
26	102
27	104
28	106
29	108
30	110
31	126
32	128
33	130
34	136
35	138
36	148
37	160
38	162
39	164
40	166
41	176
42	178
43	190
44	196
45	198
46	208
47	210
48	220
49	222
50	224
51	226
52	238
53	250
54	260
55	262
56	268
57	270
58	280

n	a(n)
1	2
2	4
3	6
4	8
5	10
6	16
7	18
8	20
9	22
10	28
11	30
12	40
13	42
14	44
15	46
16	52
17	54
18	56
19	58
20	64
21	70
22	78
23	80
24	82
25	100
26	102
27	104
28	106
29	108
30	110
31	126
32	128
33	130
34	136
35	138
36	148
37	160
38	162
39	164
40	166
41	176
42	178
43	190
44	196
45	198
46	208
47	210
48	220
49	222
50	224
51	226
52	238
53	250
54	260
55	262
56	268
57	270
58	280

n	a(n)
1	2
2	4
3	6
4	8
5	10
6	16
7	18
8	20
9	22
10	28
11	30
12	40
13	42
14	44
15	46
16	52
17	54
18	56
19	58
20	64
21	70
22	78
23	80
24	82
25	100
26	102
27	104
28	106
29	108
30	110
31	126
32	128
33	130
34	136
35	138
36	148
37	160
38	162
39	164
40	166
41	176
42	178
43	190
44	196
45	198
46	208
47	210
48	220
49	222
50	224
51	226
52	238
53	250
54	260
55	262
56	268
57	270
58	280