A317832 - cp's OEIS frontend

A317832 Denominators of rational valued sequence f whose Dirichlet convolution with itself yields A000203 (sigma, the sum of divisors).

n	a(n)
1	1
2	2
3	1
4	8
5	1
6	1
7	1
8	16
9	2
10	2
11	1
12	4
13	1
14	1
15	1
16	128
17	1
18	4
19	1
20	8
21	1
22	1
23	1
24	8
25	1
26	2
27	1
28	2
29	1
30	1
31	1
32	256
33	1
34	2
35	1
36	16
37	1
38	1
39	1
40	16
41	1
42	1
43	1
44	4
45	2
46	1
47	1
48	64
49	2
50	2
51	1
52	8
53	1
54	2
55	1
56	4
57	1
58	2
59	1
60	4
61	1
62	1
63	1
64	1024
65	1
66	1
67	1
68	8
69	1
70	1
71	1
72	32
73	1
74	2
75	1
76	4
77	1
78	1
79	1
80	128
81	8
82	2
83	1
84	1
85	1
86	1
87	1
88	8
89	1
90	4
91	1
92	2
93	1
94	1
95	1
96	128
97	1
98	4
99	1
100	8
101	1
102	1
103	1
104	16
105	1

[1, 2, 1, 8, 1, 1, 1, 16, 2, 2, 1, 4, 1, 1, 1, 128, 1, 4, 1, 8, 1, 1, 1, 8, 1, 2, 1, 2, 1, 1, 1, 256, 1, 2, 1, 16, 1, 1, 1, 16, 1, 1, 1, 4, 2, 1, 1, 64, 2, 2, 1, 8, 1, 2, 1, 4, 1, 2, 1, 4, 1, 1, 1, 1024, 1, 1, 1, 8, 1, 1, 1, 32, 1, 2, 1, 4, 1, 1, 1, 128, 8, 2, 1, 1, 1, 1, 1, 8, 1, 4, 1, 2, 1, 1, 1, 128, 1, 4, 1, 8, 1, 1, 1, 16, 1]

cp's OEIS Frontend

A317832 Denominators of rational valued sequence f whose Dirichlet convolution with itself yields A000203 (sigma, the sum of divisors).

Table of values

List of values