A318583 - cp's OEIS frontend

A318583 a(1) = a(2) = 1; for n > 2, a(n+2) = Sum_{d|n} mu(n/d)*a(d).

n	a(n)
1	1
2	1
3	1
4	0
5	0
6	-1
7	-1
8	-2
9	-2
10	-2
11	-3
12	-2
13	-4
14	0
15	-5
16	1
17	-5
18	3
19	-6
20	7
21	-7
22	10
23	-6
24	13
25	-7
26	17
27	-7
28	21
29	-5
30	22
31	-6
32	31
33	-7
34	30
35	-4
36	35
37	-2
38	33
39	-3
40	39
41	1
42	34
43	0
44	42
45	-1
46	33
47	7
48	39
49	6
50	23
51	7
52	32
53	12
54	16
55	11
56	18
57	15
58	-1
59	21
60	4
61	20
62	-27
63	19
64	-21
65	29
66	-52
67	34
68	-56
69	33
70	-85
71	39
72	-80
73	38
74	-130
75	37

[1, 1, 1, 0, 0, -1, -1, -2, -2, -2, -3, -2, -4, 0, -5, 1, -5, 3, -6, 7, -7, 10, -6, 13, -7, 17, -7, 21, -5, 22, -6, 31, -7, 30, -4, 35, -2, 33, -3, 39, 1, 34, 0, 42, -1, 33, 7, 39, 6, 23, 7, 32, 12, 16, 11, 18, 15, -1, 21, 4, 20, -27, 19, -21, 29, -52, 34, -56, 33, -85, 39, -80, 38, -130, 37]

cp's OEIS Frontend

A318583 a(1) = a(2) = 1; for n > 2, a(n+2) = Sum_{d|n} mu(n/d)*a(d).

Table of values

List of values