A086239 - cp's OEIS frontend

A086239 Decimal expansion of Sum_{k>=2} c(k)/prime(k), where c(k) = -1 if p == 1 (mod 4) and c(k) = +1 if p == 3 (mod 4).

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

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

cp's OEIS Frontend

A086239 Decimal expansion of Sum_{k>=2} c(k)/prime(k), where c(k) = -1 if p == 1 (mod 4) and c(k) = +1 if p == 3 (mod 4).

Table of values

List of values

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

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

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