A256970 - cp's OEIS frontend

A256970 Smallest prime divisor of 4*n^2+1.

n	a(n)
1	5
2	17
3	37
4	5
5	101
6	5
7	197
8	257
9	5
10	401
11	5
12	577
13	677
14	5
15	17
16	5
17	13
18	1297
19	5
20	1601
21	5
22	13
23	29
24	5
25	41
26	5
27	2917
28	3137
29	5
30	13
31	5
32	17
33	4357
34	5
35	13
36	5
37	5477
38	53
39	5
40	37
41	5
42	7057
43	13
44	5
45	8101
46	5
47	8837
48	13
49	5
50	73
51	5
52	29
53	17
54	5
55	12101
56	5
57	41
58	13457
59	5

[5, 17, 37, 5, 101, 5, 197, 257, 5, 401, 5, 577, 677, 5, 17, 5, 13, 1297, 5, 1601, 5, 13, 29, 5, 41, 5, 2917, 3137, 5, 13, 5, 17, 4357, 5, 13, 5, 5477, 53, 5, 37, 5, 7057, 13, 5, 8101, 5, 8837, 13, 5, 73, 5, 29, 17, 5, 12101, 5, 41, 13457, 5]

cp's OEIS Frontend

A256970 Smallest prime divisor of 4*n^2+1.

Table of values

List of values