A195989 - cp's OEIS frontend

A195989 Quotient of denominators of (BernoulliB(2n)/n) and BernoulliB(2n).

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

[1, 2, 3, 4, 1, 6, 1, 8, 9, 10, 1, 12, 1, 2, 3, 16, 1, 18, 1, 20, 21, 2, 1, 24, 1, 2, 27, 4, 1, 30, 1, 32, 3, 2, 1, 36, 1, 2, 3, 40, 1, 42, 1, 4, 9, 2, 1, 48, 1, 50, 3, 4, 1, 54, 11, 8, 3, 2, 1, 60, 1, 2, 63, 64, 1, 6, 1, 4, 3, 10, 1, 72, 1, 2, 3, 4, 1, 78, 1, 80, 81, 2, 1, 84]

cp's OEIS Frontend

A195989 Quotient of denominators of (BernoulliB(2n)/n) and BernoulliB(2n).

Table of values

List of values

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

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

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