A121839 - cp's OEIS frontend

A121839 Decimal expansion of Sum_{k>=1} 1/C(k), where C(k) is a Catalan Number (A000108).

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

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

cp's OEIS Frontend

A121839 Decimal expansion of Sum_{k>=1} 1/C(k), where C(k) is a Catalan Number (A000108).

Table of values

List of values

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

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

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