A096057 - cp's OEIS frontend

A096057 a(1) = 1, a(n) = least prime divisor of b(n), where b(1) = 1, b(n) = n*b(n-1) + 1 = A002627(n).

n	a(n)
1	1
2	3
3	2
4	41
5	2
6	1237
7	2
8	29
9	2
10	43
11	2
12	5
13	2
14	5
15	2
16	35951249665217
17	2
18	28001
19	2
20	1409
21	2
22	5
23	2
24	5
25	2
26	47
27	2
28	661
29	2
30	13
31	2
32	5
33	2
34	5
35	2
36	13
37	2
38	13
39	2
40	73
41	2
42	5
43	2
44	5
45	2
46	71
47	2
48	2437159
49	2
50	31
51	2
52	5
53	2
54	5
55	2
56	13
57	2
58	3020497643
59	2
60	23
61	2
62	5
63	2
64	5
65	2
66	5672529813439
67	2
68	15336863

[1, 3, 2, 41, 2, 1237, 2, 29, 2, 43, 2, 5, 2, 5, 2, 35951249665217, 2, 28001, 2, 1409, 2, 5, 2, 5, 2, 47, 2, 661, 2, 13, 2, 5, 2, 5, 2, 13, 2, 13, 2, 73, 2, 5, 2, 5, 2, 71, 2, 2437159, 2, 31, 2, 5, 2, 5, 2, 13, 2, 3020497643, 2, 23, 2, 5, 2, 5, 2, 5672529813439, 2, 15336863]

cp's OEIS Frontend

A096057 a(1) = 1, a(n) = least prime divisor of b(n), where b(1) = 1, b(n) = n*b(n-1) + 1 = A002627(n).

Table of values

List of values