A166376 - cp's OEIS frontend

A166376 Triangle in which n-th row (n>1) gives prime factors of n^2 + 1 with repetition.

n	a(n)
1	2
2	5
3	2
4	5
5	17
6	2
7	13
8	37
9	2
10	5
11	5
12	5
13	13
14	2
15	41
16	101
17	2
18	61
19	5
20	29
21	2
22	5
23	17
24	197
25	2
26	113
27	257
28	2
29	5
30	29
31	5
32	5
33	13
34	2
35	181
36	401
37	2
38	13
39	17
40	5
41	97
42	2
43	5
44	53
45	577
46	2
47	313
48	677
49	2
50	5
51	73
52	5
53	157
54	2
55	421
56	17
57	53
58	2
59	13
60	37
61	5
62	5
63	41

[2, 5, 2, 5, 17, 2, 13, 37, 2, 5, 5, 5, 13, 2, 41, 101, 2, 61, 5, 29, 2, 5, 17, 197, 2, 113, 257, 2, 5, 29, 5, 5, 13, 2, 181, 401, 2, 13, 17, 5, 97, 2, 5, 53, 577, 2, 313, 677, 2, 5, 73, 5, 157, 2, 421, 17, 53, 2, 13, 37, 5, 5, 41]

cp's OEIS Frontend

A166376 Triangle in which n-th row (n>1) gives prime factors of n^2 + 1 with repetition.

Table of values

List of values

n	a(n)
1	2
2	5
3	2
4	5
5	17
6	2
7	13
8	37
9	2
10	5
11	5
12	5
13	13
14	2
15	41
16	101
17	2
18	61
19	5
20	29
21	2
22	5
23	17
24	197
25	2
26	113
27	257
28	2
29	5
30	29
31	5
32	5
33	13
34	2
35	181
36	401
37	2
38	13
39	17
40	5
41	97
42	2
43	5
44	53
45	577
46	2
47	313
48	677
49	2
50	5
51	73
52	5
53	157
54	2
55	421
56	17
57	53
58	2
59	13
60	37
61	5
62	5
63	41

n	a(n)
1	2
2	5
3	2
4	5
5	17
6	2
7	13
8	37
9	2
10	5
11	5
12	5
13	13
14	2
15	41
16	101
17	2
18	61
19	5
20	29
21	2
22	5
23	17
24	197
25	2
26	113
27	257
28	2
29	5
30	29
31	5
32	5
33	13
34	2
35	181
36	401
37	2
38	13
39	17
40	5
41	97
42	2
43	5
44	53
45	577
46	2
47	313
48	677
49	2
50	5
51	73
52	5
53	157
54	2
55	421
56	17
57	53
58	2
59	13
60	37
61	5
62	5
63	41

n	a(n)
1	2
2	5
3	2
4	5
5	17
6	2
7	13
8	37
9	2
10	5
11	5
12	5
13	13
14	2
15	41
16	101
17	2
18	61
19	5
20	29
21	2
22	5
23	17
24	197
25	2
26	113
27	257
28	2
29	5
30	29
31	5
32	5
33	13
34	2
35	181
36	401
37	2
38	13
39	17
40	5
41	97
42	2
43	5
44	53
45	577
46	2
47	313
48	677
49	2
50	5
51	73
52	5
53	157
54	2
55	421
56	17
57	53
58	2
59	13
60	37
61	5
62	5
63	41