A081550 - cp's OEIS frontend

A081550 Decimal expansion of Sum_(1/(2^q-1)) with the summation extending over all pairs of integers gcd(p,q) = 1, 0 < p/q < Pi.

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

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

cp's OEIS Frontend

A081550 Decimal expansion of Sum_(1/(2^q-1)) with the summation extending over all pairs of integers gcd(p,q) = 1, 0 < p/q < Pi.

Table of values

List of values

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

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

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