A185633 - cp's OEIS frontend

A185633 For odd n, a(n) = 2; for even n, a(n) = denominator of Bernoulli(n)/n; The number 2 alternating with the elements of A006953.

n	a(n)
1	2
2	12
3	2
4	120
5	2
6	252
7	2
8	240
9	2
10	132
11	2
12	32760
13	2
14	12
15	2
16	8160
17	2
18	14364
19	2
20	6600
21	2
22	276
23	2
24	65520
25	2
26	12
27	2
28	3480
29	2
30	85932
31	2
32	16320
33	2
34	12
35	2
36	69090840
37	2
38	12
39	2
40	541200
41	2
42	75852
43	2
44	2760
45	2
46	564
47	2
48	2227680
49	2
50	132
51	2
52	6360

[2, 12, 2, 120, 2, 252, 2, 240, 2, 132, 2, 32760, 2, 12, 2, 8160, 2, 14364, 2, 6600, 2, 276, 2, 65520, 2, 12, 2, 3480, 2, 85932, 2, 16320, 2, 12, 2, 69090840, 2, 12, 2, 541200, 2, 75852, 2, 2760, 2, 564, 2, 2227680, 2, 132, 2, 6360]

cp's OEIS Frontend

A185633 For odd n, a(n) = 2; for even n, a(n) = denominator of Bernoulli(n)/n; The number 2 alternating with the elements of A006953.

Table of values

List of values