A125256 - cp's OEIS frontend

A125256 Smallest odd prime divisor of n^2 + 1.

n	a(n)
2	5
3	5
4	17
5	13
6	37
7	5
8	5
9	41
10	101
11	61
12	5
13	5
14	197
15	113
16	257
17	5
18	5
19	181
20	401
21	13
22	5
23	5
24	577
25	313
26	677
27	5
28	5
29	421
30	17
31	13
32	5
33	5
34	13
35	613
36	1297
37	5
38	5
39	761
40	1601
41	29
42	5
43	5
44	13
45	1013
46	29
47	5
48	5
49	1201
50	41
51	1301
52	5
53	5
54	2917
55	17
56	3137
57	5
58	5
59	1741
60	13
61	1861
62	5
63	5
64	17
65	2113
66	4357
67	5
68	5

[5, 5, 17, 13, 37, 5, 5, 41, 101, 61, 5, 5, 197, 113, 257, 5, 5, 181, 401, 13, 5, 5, 577, 313, 677, 5, 5, 421, 17, 13, 5, 5, 13, 613, 1297, 5, 5, 761, 1601, 29, 5, 5, 13, 1013, 29, 5, 5, 1201, 41, 1301, 5, 5, 2917, 17, 3137, 5, 5, 1741, 13, 1861, 5, 5, 17, 2113, 4357, 5, 5]

cp's OEIS Frontend

A125256 Smallest odd prime divisor of n^2 + 1.

Table of values

List of values