A209189 - cp's OEIS frontend

A209189 Smallest prime factor of n^2 + n + 1.

n	a(n)
2	7
3	13
4	3
5	31
6	43
7	3
8	73
9	7
10	3
11	7
12	157
13	3
14	211
15	241
16	3
17	307
18	7
19	3
20	421
21	463
22	3
23	7
24	601
25	3
26	19
27	757
28	3
29	13
30	7
31	3
32	7
33	1123
34	3
35	13
36	31
37	3
38	1483
39	7
40	3
41	1723
42	13
43	3
44	7
45	19
46	3
47	37
48	13
49	3
50	2551

[7, 13, 3, 31, 43, 3, 73, 7, 3, 7, 157, 3, 211, 241, 3, 307, 7, 3, 421, 463, 3, 7, 601, 3, 19, 757, 3, 13, 7, 3, 7, 1123, 3, 13, 31, 3, 1483, 7, 3, 1723, 13, 3, 7, 19, 3, 37, 13, 3, 2551]

cp's OEIS Frontend

A209189 Smallest prime factor of n^2 + n + 1.

Table of values

List of values