A318661 - cp's OEIS frontend

A318661 Numerators of the sequence whose Dirichlet convolution with itself yields A055653, sum of phi(d) over all unitary divisors d of n.

n	a(n)
1	1
2	1
3	3
4	1
5	5
6	3
7	7
8	3
9	19
10	5
11	11
12	3
13	13
14	7
15	15
16	5
17	17
18	19
19	19
20	5
21	21
22	11
23	23
24	9
25	59
26	13
27	95
28	7
29	29
30	15
31	31
32	9
33	33
34	17
35	35
36	19
37	37
38	19
39	39
40	15
41	41
42	21
43	43
44	11
45	95
46	23
47	47
48	15
49	123
50	59
51	51
52	13
53	53
54	95
55	55
56	21
57	57
58	29
59	59
60	15
61	61
62	31
63	133
64	67
65	65
66	33
67	67
68	17
69	69
70	35
71	71
72	57
73	73
74	37
75	177
76	19
77	77
78	39
79	79
80	25
81	2019
82	41
83	83
84	21
85	85
86	43
87	87
88	33
89	89

[1, 1, 3, 1, 5, 3, 7, 3, 19, 5, 11, 3, 13, 7, 15, 5, 17, 19, 19, 5, 21, 11, 23, 9, 59, 13, 95, 7, 29, 15, 31, 9, 33, 17, 35, 19, 37, 19, 39, 15, 41, 21, 43, 11, 95, 23, 47, 15, 123, 59, 51, 13, 53, 95, 55, 21, 57, 29, 59, 15, 61, 31, 133, 67, 65, 33, 67, 17, 69, 35, 71, 57, 73, 37, 177, 19, 77, 39, 79, 25, 2019, 41, 83, 21, 85, 43, 87, 33, 89]

cp's OEIS Frontend

A318661 Numerators of the sequence whose Dirichlet convolution with itself yields A055653, sum of phi(d) over all unitary divisors d of n.

Table of values

List of values