A092404 - cp's OEIS frontend

A092404 a(n) = phi(n) + phi(n+1).

n	a(n)
1	2
2	3
3	4
4	6
5	6
6	8
7	10
8	10
9	10
10	14
11	14
12	16
13	18
14	14
15	16
16	24
17	22
18	24
19	26
20	20
21	22
22	32
23	30
24	28
25	32
26	30
27	30
28	40
29	36
30	38
31	46
32	36
33	36
34	40
35	36
36	48
37	54
38	42
39	40
40	56
41	52
42	54
43	62
44	44
45	46
46	68
47	62
48	58
49	62
50	52
51	56
52	76
53	70
54	58
55	64
56	60
57	64
58	86
59	74
60	76

[2, 3, 4, 6, 6, 8, 10, 10, 10, 14, 14, 16, 18, 14, 16, 24, 22, 24, 26, 20, 22, 32, 30, 28, 32, 30, 30, 40, 36, 38, 46, 36, 36, 40, 36, 48, 54, 42, 40, 56, 52, 54, 62, 44, 46, 68, 62, 58, 62, 52, 56, 76, 70, 58, 64, 60, 64, 86, 74, 76]

cp's OEIS Frontend

A092404 a(n) = phi(n) + phi(n+1).

Table of values

List of values

n	a(n)
1	2
2	3
3	4
4	6
5	6
6	8
7	10
8	10
9	10
10	14
11	14
12	16
13	18
14	14
15	16
16	24
17	22
18	24
19	26
20	20
21	22
22	32
23	30
24	28
25	32
26	30
27	30
28	40
29	36
30	38
31	46
32	36
33	36
34	40
35	36
36	48
37	54
38	42
39	40
40	56
41	52
42	54
43	62
44	44
45	46
46	68
47	62
48	58
49	62
50	52
51	56
52	76
53	70
54	58
55	64
56	60
57	64
58	86
59	74
60	76

n	a(n)
1	2
2	3
3	4
4	6
5	6
6	8
7	10
8	10
9	10
10	14
11	14
12	16
13	18
14	14
15	16
16	24
17	22
18	24
19	26
20	20
21	22
22	32
23	30
24	28
25	32
26	30
27	30
28	40
29	36
30	38
31	46
32	36
33	36
34	40
35	36
36	48
37	54
38	42
39	40
40	56
41	52
42	54
43	62
44	44
45	46
46	68
47	62
48	58
49	62
50	52
51	56
52	76
53	70
54	58
55	64
56	60
57	64
58	86
59	74
60	76

n	a(n)
1	2
2	3
3	4
4	6
5	6
6	8
7	10
8	10
9	10
10	14
11	14
12	16
13	18
14	14
15	16
16	24
17	22
18	24
19	26
20	20
21	22
22	32
23	30
24	28
25	32
26	30
27	30
28	40
29	36
30	38
31	46
32	36
33	36
34	40
35	36
36	48
37	54
38	42
39	40
40	56
41	52
42	54
43	62
44	44
45	46
46	68
47	62
48	58
49	62
50	52
51	56
52	76
53	70
54	58
55	64
56	60
57	64
58	86
59	74
60	76