A225481 - cp's OEIS frontend

A225481 a(n) = product{ p primes <= n+1 such that p divides n+1 or p-1 divides n }.

n	a(n)
0	1
1	2
2	6
3	2
4	30
5	6
6	42
7	2
8	30
9	10
10	66
11	6
12	2730
13	14
14	30
15	2
16	510
17	6
18	798
19	10
20	2310
21	22
22	138
23	6
24	2730
25	26
26	6
27	14
28	870
29	30
30	14322
31	2
32	5610
33	34
34	210
35	6
36	1919190
37	38
38	78
39	10
40	13530
41	42
42	1806
43	22
44	690
45	46
46	282
47	6
48	46410
49	10
50	1122
51	26
52	1590
53	6
54	43890
55	14
56	16530
57	58

[1, 2, 6, 2, 30, 6, 42, 2, 30, 10, 66, 6, 2730, 14, 30, 2, 510, 6, 798, 10, 2310, 22, 138, 6, 2730, 26, 6, 14, 870, 30, 14322, 2, 5610, 34, 210, 6, 1919190, 38, 78, 10, 13530, 42, 1806, 22, 690, 46, 282, 6, 46410, 10, 1122, 26, 1590, 6, 43890, 14, 16530, 58]

cp's OEIS Frontend

A225481 a(n) = product{ p primes <= n+1 such that p divides n+1 or p-1 divides n }.

Table of values

List of values