A078311 - cp's OEIS frontend

A078311 Smallest prime factor of n*rad(n)+1, where rad = A007947 (squarefree kernel).

n	a(n)
1	2
2	5
3	2
4	3
5	2
6	37
7	2
8	17
9	2
10	101
11	2
12	73
13	2
14	197
15	2
16	3
17	2
18	109
19	2
20	3
21	2
22	5
23	2
24	5
25	2
26	677
27	2
28	3
29	2
30	17
31	2
32	5
33	2
34	13
35	2
36	7
37	2
38	5
39	2
40	401
41	2
42	5
43	2
44	3
45	2
46	29
47	2
48	17
49	2
50	3
51	2
52	3
53	2
54	5
55	2
56	5
57	2
58	5
59	2
60	1801
61	2
62	5
63	2
64	3
65	2
66	4357
67	2
68	3
69	2
70	13
71	2
72	433
73	2
74	5477
75	2
76	3
77	2
78	5
79	2
80	3
81	2
82	5
83	2
84	3529
85	2
86	13

[2, 5, 2, 3, 2, 37, 2, 17, 2, 101, 2, 73, 2, 197, 2, 3, 2, 109, 2, 3, 2, 5, 2, 5, 2, 677, 2, 3, 2, 17, 2, 5, 2, 13, 2, 7, 2, 5, 2, 401, 2, 5, 2, 3, 2, 29, 2, 17, 2, 3, 2, 3, 2, 5, 2, 5, 2, 5, 2, 1801, 2, 5, 2, 3, 2, 4357, 2, 3, 2, 13, 2, 433, 2, 5477, 2, 3, 2, 5, 2, 3, 2, 5, 2, 3529, 2, 13]

cp's OEIS Frontend

A078311 Smallest prime factor of n*rad(n)+1, where rad = A007947 (squarefree kernel).

Table of values

List of values