A358519 - cp's OEIS frontend

A358519 Decimal expansion of Sum_{k >= 1} (-1)^(k+1)/(k^2 + 4*k - 1).

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

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

cp's OEIS Frontend

A358519 Decimal expansion of Sum_{k >= 1} (-1)^(k+1)/(k^2 + 4*k - 1).

Table of values

List of values

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

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

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