A023900 - cp's OEIS frontend

A023900 Dirichlet inverse of Euler totient function (A000010).

n	a(n)
1	1
2	-1
3	-2
4	-1
5	-4
6	2
7	-6
8	-1
9	-2
10	4
11	-10
12	2
13	-12
14	6
15	8
16	-1
17	-16
18	2
19	-18
20	4
21	12
22	10
23	-22
24	2
25	-4
26	12
27	-2
28	6
29	-28
30	-8
31	-30
32	-1
33	20
34	16
35	24
36	2
37	-36
38	18
39	24
40	4
41	-40
42	-12
43	-42
44	10
45	8
46	22
47	-46
48	2
49	-6
50	4
51	32
52	12
53	-52
54	2
55	40
56	6
57	36
58	28
59	-58
60	-8
61	-60
62	30
63	12
64	-1
65	48
66	-20
67	-66
68	16
69	44
70	-24
71	-70
72	2
73	-72
74	36
75	8
76	18
77	60
78	-24
79	-78
80	4
81	-2

[1, -1, -2, -1, -4, 2, -6, -1, -2, 4, -10, 2, -12, 6, 8, -1, -16, 2, -18, 4, 12, 10, -22, 2, -4, 12, -2, 6, -28, -8, -30, -1, 20, 16, 24, 2, -36, 18, 24, 4, -40, -12, -42, 10, 8, 22, -46, 2, -6, 4, 32, 12, -52, 2, 40, 6, 36, 28, -58, -8, -60, 30, 12, -1, 48, -20, -66, 16, 44, -24, -70, 2, -72, 36, 8, 18, 60, -24, -78, 4, -2]

cp's OEIS Frontend

A023900 Dirichlet inverse of Euler totient function (A000010).

Table of values

List of values

n	a(n)
1	1
2	-1
3	-2
4	-1
5	-4
6	2
7	-6
8	-1
9	-2
10	4
11	-10
12	2
13	-12
14	6
15	8
16	-1
17	-16
18	2
19	-18
20	4
21	12
22	10
23	-22
24	2
25	-4
26	12
27	-2
28	6
29	-28
30	-8
31	-30
32	-1
33	20
34	16
35	24
36	2
37	-36
38	18
39	24
40	4
41	-40
42	-12
43	-42
44	10
45	8
46	22
47	-46
48	2
49	-6
50	4
51	32
52	12
53	-52
54	2
55	40
56	6
57	36
58	28
59	-58
60	-8
61	-60
62	30
63	12
64	-1
65	48
66	-20
67	-66
68	16
69	44
70	-24
71	-70
72	2
73	-72
74	36
75	8
76	18
77	60
78	-24
79	-78
80	4
81	-2

n	a(n)
1	1
2	-1
3	-2
4	-1
5	-4
6	2
7	-6
8	-1
9	-2
10	4
11	-10
12	2
13	-12
14	6
15	8
16	-1
17	-16
18	2
19	-18
20	4
21	12
22	10
23	-22
24	2
25	-4
26	12
27	-2
28	6
29	-28
30	-8
31	-30
32	-1
33	20
34	16
35	24
36	2
37	-36
38	18
39	24
40	4
41	-40
42	-12
43	-42
44	10
45	8
46	22
47	-46
48	2
49	-6
50	4
51	32
52	12
53	-52
54	2
55	40
56	6
57	36
58	28
59	-58
60	-8
61	-60
62	30
63	12
64	-1
65	48
66	-20
67	-66
68	16
69	44
70	-24
71	-70
72	2
73	-72
74	36
75	8
76	18
77	60
78	-24
79	-78
80	4
81	-2

n	a(n)
1	1
2	-1
3	-2
4	-1
5	-4
6	2
7	-6
8	-1
9	-2
10	4
11	-10
12	2
13	-12
14	6
15	8
16	-1
17	-16
18	2
19	-18
20	4
21	12
22	10
23	-22
24	2
25	-4
26	12
27	-2
28	6
29	-28
30	-8
31	-30
32	-1
33	20
34	16
35	24
36	2
37	-36
38	18
39	24
40	4
41	-40
42	-12
43	-42
44	10
45	8
46	22
47	-46
48	2
49	-6
50	4
51	32
52	12
53	-52
54	2
55	40
56	6
57	36
58	28
59	-58
60	-8
61	-60
62	30
63	12
64	-1
65	48
66	-20
67	-66
68	16
69	44
70	-24
71	-70
72	2
73	-72
74	36
75	8
76	18
77	60
78	-24
79	-78
80	4
81	-2