A215140 - cp's OEIS frontend

A215140 Decimal expansion of Sum_{n>=1} 1 / sigma(n)^n.

n	a(n)
1	1
2	1
3	2
4	7
5	2
6	8
7	2
8	0
9	1
10	7
11	2
12	8
13	3
14	2
15	6
16	5
17	8
18	9
19	0
20	3
21	4
22	4
23	3
24	7
25	9
26	7
27	2
28	3
29	2
30	7
31	2
32	5
33	0
34	6
35	1
36	3
37	5
38	6
39	6
40	1
41	4
42	1
43	2
44	3
45	0
46	9
47	9
48	8
49	4
50	9
51	3
52	1
53	2
54	2
55	4
56	5
57	4
58	0
59	9
60	6
61	5
62	5
63	6
64	2
65	7
66	3
67	8
68	6
69	4
70	3
71	1
72	9
73	5
74	1
75	8
76	1
77	5
78	2
79	5
80	9
81	6
82	7
83	0
84	6
85	3
86	4
87	9

[1, 1, 2, 7, 2, 8, 2, 0, 1, 7, 2, 8, 3, 2, 6, 5, 8, 9, 0, 3, 4, 4, 3, 7, 9, 7, 2, 3, 2, 7, 2, 5, 0, 6, 1, 3, 5, 6, 6, 1, 4, 1, 2, 3, 0, 9, 9, 8, 4, 9, 3, 1, 2, 2, 4, 5, 4, 0, 9, 6, 5, 5, 6, 2, 7, 3, 8, 6, 4, 3, 1, 9, 5, 1, 8, 1, 5, 2, 5, 9, 6, 7, 0, 6, 3, 4, 9]

cp's OEIS Frontend

A215140 Decimal expansion of Sum_{n>=1} 1 / sigma(n)^n.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	7
5	2
6	8
7	2
8	0
9	1
10	7
11	2
12	8
13	3
14	2
15	6
16	5
17	8
18	9
19	0
20	3
21	4
22	4
23	3
24	7
25	9
26	7
27	2
28	3
29	2
30	7
31	2
32	5
33	0
34	6
35	1
36	3
37	5
38	6
39	6
40	1
41	4
42	1
43	2
44	3
45	0
46	9
47	9
48	8
49	4
50	9
51	3
52	1
53	2
54	2
55	4
56	5
57	4
58	0
59	9
60	6
61	5
62	5
63	6
64	2
65	7
66	3
67	8
68	6
69	4
70	3
71	1
72	9
73	5
74	1
75	8
76	1
77	5
78	2
79	5
80	9
81	6
82	7
83	0
84	6
85	3
86	4
87	9

n	a(n)
1	1
2	1
3	2
4	7
5	2
6	8
7	2
8	0
9	1
10	7
11	2
12	8
13	3
14	2
15	6
16	5
17	8
18	9
19	0
20	3
21	4
22	4
23	3
24	7
25	9
26	7
27	2
28	3
29	2
30	7
31	2
32	5
33	0
34	6
35	1
36	3
37	5
38	6
39	6
40	1
41	4
42	1
43	2
44	3
45	0
46	9
47	9
48	8
49	4
50	9
51	3
52	1
53	2
54	2
55	4
56	5
57	4
58	0
59	9
60	6
61	5
62	5
63	6
64	2
65	7
66	3
67	8
68	6
69	4
70	3
71	1
72	9
73	5
74	1
75	8
76	1
77	5
78	2
79	5
80	9
81	6
82	7
83	0
84	6
85	3
86	4
87	9

n	a(n)
1	1
2	1
3	2
4	7
5	2
6	8
7	2
8	0
9	1
10	7
11	2
12	8
13	3
14	2
15	6
16	5
17	8
18	9
19	0
20	3
21	4
22	4
23	3
24	7
25	9
26	7
27	2
28	3
29	2
30	7
31	2
32	5
33	0
34	6
35	1
36	3
37	5
38	6
39	6
40	1
41	4
42	1
43	2
44	3
45	0
46	9
47	9
48	8
49	4
50	9
51	3
52	1
53	2
54	2
55	4
56	5
57	4
58	0
59	9
60	6
61	5
62	5
63	6
64	2
65	7
66	3
67	8
68	6
69	4
70	3
71	1
72	9
73	5
74	1
75	8
76	1
77	5
78	2
79	5
80	9
81	6
82	7
83	0
84	6
85	3
86	4
87	9