A355921 - cp's OEIS frontend

A355921 Decimal expansion of Sum_{k>=1} (1/k)*arctan(1/k).

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

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

cp's OEIS Frontend

A355921 Decimal expansion of Sum_{k>=1} (1/k)*arctan(1/k).

Table of values

List of values

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

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

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