A109694 - cp's OEIS frontend

A109694 Decimal expansion of Sum_{n>=1} 1/sigma_2(n).

n	a(n)
1	1
2	5
3	3
4	7
5	8
6	1
7	2
8	8
9	9
10	1
11	8
12	2
13	7
14	2
15	5
16	6
17	1
18	6
19	2
20	5
21	3
22	8
23	6
24	6
25	1
26	0
27	0
28	2
29	7
30	3
31	8
32	2
33	6
34	8
35	3
36	3
37	0
38	9
39	1
40	9
41	3
42	6
43	0
44	0
45	4
46	9
47	4
48	7
49	3
50	2
51	2
52	3
53	5
54	4
55	9
56	2
57	9
58	6
59	1
60	7
61	6
62	8
63	9
64	6
65	5
66	9
67	4
68	2
69	6
70	3
71	3
72	0
73	4
74	4
75	5
76	3
77	1
78	0
79	4
80	1
81	0
82	2
83	3
84	9
85	5
86	0
87	1
88	5
89	5
90	6
91	7
92	6
93	0
94	5
95	3
96	2
97	3
98	5
99	9
100	4
101	8
102	9
103	1
104	6
105	0

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

cp's OEIS Frontend

A109694 Decimal expansion of Sum_{n>=1} 1/sigma_2(n).

Table of values

List of values

n	a(n)
1	1
2	5
3	3
4	7
5	8
6	1
7	2
8	8
9	9
10	1
11	8
12	2
13	7
14	2
15	5
16	6
17	1
18	6
19	2
20	5
21	3
22	8
23	6
24	6
25	1
26	0
27	0
28	2
29	7
30	3
31	8
32	2
33	6
34	8
35	3
36	3
37	0
38	9
39	1
40	9
41	3
42	6
43	0
44	0
45	4
46	9
47	4
48	7
49	3
50	2
51	2
52	3
53	5
54	4
55	9
56	2
57	9
58	6
59	1
60	7
61	6
62	8
63	9
64	6
65	5
66	9
67	4
68	2
69	6
70	3
71	3
72	0
73	4
74	4
75	5
76	3
77	1
78	0
79	4
80	1
81	0
82	2
83	3
84	9
85	5
86	0
87	1
88	5
89	5
90	6
91	7
92	6
93	0
94	5
95	3
96	2
97	3
98	5
99	9
100	4
101	8
102	9
103	1
104	6
105	0

n	a(n)
1	1
2	5
3	3
4	7
5	8
6	1
7	2
8	8
9	9
10	1
11	8
12	2
13	7
14	2
15	5
16	6
17	1
18	6
19	2
20	5
21	3
22	8
23	6
24	6
25	1
26	0
27	0
28	2
29	7
30	3
31	8
32	2
33	6
34	8
35	3
36	3
37	0
38	9
39	1
40	9
41	3
42	6
43	0
44	0
45	4
46	9
47	4
48	7
49	3
50	2
51	2
52	3
53	5
54	4
55	9
56	2
57	9
58	6
59	1
60	7
61	6
62	8
63	9
64	6
65	5
66	9
67	4
68	2
69	6
70	3
71	3
72	0
73	4
74	4
75	5
76	3
77	1
78	0
79	4
80	1
81	0
82	2
83	3
84	9
85	5
86	0
87	1
88	5
89	5
90	6
91	7
92	6
93	0
94	5
95	3
96	2
97	3
98	5
99	9
100	4
101	8
102	9
103	1
104	6
105	0

n	a(n)
1	1
2	5
3	3
4	7
5	8
6	1
7	2
8	8
9	9
10	1
11	8
12	2
13	7
14	2
15	5
16	6
17	1
18	6
19	2
20	5
21	3
22	8
23	6
24	6
25	1
26	0
27	0
28	2
29	7
30	3
31	8
32	2
33	6
34	8
35	3
36	3
37	0
38	9
39	1
40	9
41	3
42	6
43	0
44	0
45	4
46	9
47	4
48	7
49	3
50	2
51	2
52	3
53	5
54	4
55	9
56	2
57	9
58	6
59	1
60	7
61	6
62	8
63	9
64	6
65	5
66	9
67	4
68	2
69	6
70	3
71	3
72	0
73	4
74	4
75	5
76	3
77	1
78	0
79	4
80	1
81	0
82	2
83	3
84	9
85	5
86	0
87	1
88	5
89	5
90	6
91	7
92	6
93	0
94	5
95	3
96	2
97	3
98	5
99	9
100	4
101	8
102	9
103	1
104	6
105	0