A145433 - cp's OEIS frontend

A145433 Decimal expansion of Sum_{n>=1} (-1)^(n-1)*n/binomial(2n,n).

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

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

cp's OEIS Frontend

A145433 Decimal expansion of Sum_{n>=1} (-1)^(n-1)*n/binomial(2n,n).

Table of values

List of values

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

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

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