A145434 - cp's OEIS frontend

A145434 Decimal expansion of Sum_{n>=1} (-1)^(n-1)*n^2/binomial(2n,n).

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

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

cp's OEIS Frontend

A145434 Decimal expansion of Sum_{n>=1} (-1)^(n-1)*n^2/binomial(2n,n).

Table of values

List of values

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

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

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