A335062 - cp's OEIS frontend

A335062 a(n) = 1 - Sum_{d|n, d > 1} (-1)^d * a(n/d).

n	a(n)
1	1
2	0
3	2
4	0
5	2
6	-2
7	2
8	0
9	4
10	-2
11	2
12	0
13	2
14	-2
15	6
16	0
17	2
18	-8
19	2
20	0
21	6
22	-2
23	2
24	0
25	4
26	-2
27	8
28	0
29	2
30	-14
31	2
32	0
33	6
34	-2
35	6
36	4
37	2
38	-2
39	6
40	0
41	2
42	-14
43	2
44	0
45	16
46	-2
47	2
48	0
49	4
50	-8
51	6
52	0
53	2
54	-24
55	6
56	0
57	6
58	-2
59	2
60	8
61	2
62	-2
63	16
64	0
65	6
66	-14
67	2
68	0
69	6
70	-14
71	2
72	0
73	2
74	-2
75	16
76	0
77	6
78	-14
79	2
80	0
81	16

[1, 0, 2, 0, 2, -2, 2, 0, 4, -2, 2, 0, 2, -2, 6, 0, 2, -8, 2, 0, 6, -2, 2, 0, 4, -2, 8, 0, 2, -14, 2, 0, 6, -2, 6, 4, 2, -2, 6, 0, 2, -14, 2, 0, 16, -2, 2, 0, 4, -8, 6, 0, 2, -24, 6, 0, 6, -2, 2, 8, 2, -2, 16, 0, 6, -14, 2, 0, 6, -14, 2, 0, 2, -2, 16, 0, 6, -14, 2, 0, 16]

cp's OEIS Frontend

A335062 a(n) = 1 - Sum_{d|n, d > 1} (-1)^d * a(n/d).

Table of values

List of values

n	a(n)
1	1
2	0
3	2
4	0
5	2
6	-2
7	2
8	0
9	4
10	-2
11	2
12	0
13	2
14	-2
15	6
16	0
17	2
18	-8
19	2
20	0
21	6
22	-2
23	2
24	0
25	4
26	-2
27	8
28	0
29	2
30	-14
31	2
32	0
33	6
34	-2
35	6
36	4
37	2
38	-2
39	6
40	0
41	2
42	-14
43	2
44	0
45	16
46	-2
47	2
48	0
49	4
50	-8
51	6
52	0
53	2
54	-24
55	6
56	0
57	6
58	-2
59	2
60	8
61	2
62	-2
63	16
64	0
65	6
66	-14
67	2
68	0
69	6
70	-14
71	2
72	0
73	2
74	-2
75	16
76	0
77	6
78	-14
79	2
80	0
81	16

n	a(n)
1	1
2	0
3	2
4	0
5	2
6	-2
7	2
8	0
9	4
10	-2
11	2
12	0
13	2
14	-2
15	6
16	0
17	2
18	-8
19	2
20	0
21	6
22	-2
23	2
24	0
25	4
26	-2
27	8
28	0
29	2
30	-14
31	2
32	0
33	6
34	-2
35	6
36	4
37	2
38	-2
39	6
40	0
41	2
42	-14
43	2
44	0
45	16
46	-2
47	2
48	0
49	4
50	-8
51	6
52	0
53	2
54	-24
55	6
56	0
57	6
58	-2
59	2
60	8
61	2
62	-2
63	16
64	0
65	6
66	-14
67	2
68	0
69	6
70	-14
71	2
72	0
73	2
74	-2
75	16
76	0
77	6
78	-14
79	2
80	0
81	16

n	a(n)
1	1
2	0
3	2
4	0
5	2
6	-2
7	2
8	0
9	4
10	-2
11	2
12	0
13	2
14	-2
15	6
16	0
17	2
18	-8
19	2
20	0
21	6
22	-2
23	2
24	0
25	4
26	-2
27	8
28	0
29	2
30	-14
31	2
32	0
33	6
34	-2
35	6
36	4
37	2
38	-2
39	6
40	0
41	2
42	-14
43	2
44	0
45	16
46	-2
47	2
48	0
49	4
50	-8
51	6
52	0
53	2
54	-24
55	6
56	0
57	6
58	-2
59	2
60	8
61	2
62	-2
63	16
64	0
65	6
66	-14
67	2
68	0
69	6
70	-14
71	2
72	0
73	2
74	-2
75	16
76	0
77	6
78	-14
79	2
80	0
81	16