A248742 - cp's OEIS frontend

A248742 Numbers of the form x^2+1 with at most two prime factors.

n	a(n)
1	2
2	5
3	10
4	17
5	26
6	37
7	65
8	82
9	101
10	122
11	145
12	197
13	226
14	257
15	362
16	401
17	485
18	577
19	626
20	677
21	785
22	842
23	901
24	1157
25	1226
26	1297
27	1522
28	1601
29	1765
30	1937
31	2026
32	2117
33	2305
34	2402
35	2501
36	2602
37	2705
38	2917
39	3137
40	3365
41	3482
42	3601
43	3722
44	3845
45	4097
46	4226
47	4357
48	4762

[2, 5, 10, 17, 26, 37, 65, 82, 101, 122, 145, 197, 226, 257, 362, 401, 485, 577, 626, 677, 785, 842, 901, 1157, 1226, 1297, 1522, 1601, 1765, 1937, 2026, 2117, 2305, 2402, 2501, 2602, 2705, 2917, 3137, 3365, 3482, 3601, 3722, 3845, 4097, 4226, 4357, 4762]

cp's OEIS Frontend

A248742 Numbers of the form x^2+1 with at most two prime factors.

Table of values

List of values