A215141 - cp's OEIS frontend

A215141 Decimal expansion of Sum_{n>=1} (-1)^(n+1) / sigma(n)^n.

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

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

cp's OEIS Frontend

A215141 Decimal expansion of Sum_{n>=1} (-1)^(n+1) / sigma(n)^n.

Table of values

List of values

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

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

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