A199858 - cp's OEIS frontend

A199858 Decimal expansion of Sum_{n = 1 .. infinity }[ 1 / Sum {i = 1 .. m} d(i)^n] where d(i) are the divisors of n and m = tau(n) is the number of divisors of n.

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

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

cp's OEIS Frontend

A199858 Decimal expansion of Sum_{n = 1 .. infinity }[ 1 / Sum {i = 1 .. m} d(i)^n] where d(i) are the divisors of n and m = tau(n) is the number of divisors of n.

Table of values

List of values

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

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

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