A224964 - cp's OEIS frontend

A224964 Irregular triangle of the denominators of the unreduced fractions that lead to the second Bernoulli numbers.

n	a(n)
0	2
1	2
2	2
3	6
4	2
5	6
6	2
7	6
8	15
9	2
10	6
11	15
12	2
13	6
14	15
15	105
16	2
17	6
18	15
19	105
20	2
21	6
22	15
23	105
24	105
25	2
26	6
27	15
28	105
29	105
30	2
31	6
32	15
33	105
34	105
35	231
36	2
37	6
38	15
39	105
40	105
41	231
42	2
43	6
44	15
45	105
46	105
47	231
48	15015
49	2
50	6
51	15
52	105
53	105
54	231
55	15015

[2, 2, 2, 6, 2, 6, 2, 6, 15, 2, 6, 15, 2, 6, 15, 105, 2, 6, 15, 105, 2, 6, 15, 105, 105, 2, 6, 15, 105, 105, 2, 6, 15, 105, 105, 231, 2, 6, 15, 105, 105, 231, 2, 6, 15, 105, 105, 231, 15015, 2, 6, 15, 105, 105, 231, 15015]

cp's OEIS Frontend

A224964 Irregular triangle of the denominators of the unreduced fractions that lead to the second Bernoulli numbers.

Table of values

List of values