A193432 - cp's OEIS frontend

A193432 Number of divisors of n^2 + 1.

n	a(n)
0	1
1	2
2	2
3	4
4	2
5	4
6	2
7	6
8	4
9	4
10	2
11	4
12	4
13	8
14	2
15	4
16	2
17	8
18	6
19	4
20	2
21	8
22	4
23	8
24	2
25	4
26	2
27	8
28	4
29	4
30	4
31	8
32	6
33	8
34	4
35	4
36	2
37	8
38	6
39	4
40	2
41	6
42	4
43	12
44	4
45	4
46	4
47	16
48	4
49	4
50	4
51	4
52	4
53	8
54	2
55	8
56	2
57	16
58	4
59	4
60	4
61	4
62	4
63	8
64	4
65	4
66	2
67	8
68	8
69	4
70	6
71	4
72	8
73	16
74	2
75	8
76	4
77	8
78	4
79	4
80	4
81	8
82	6
83	16
84	2

[1, 2, 2, 4, 2, 4, 2, 6, 4, 4, 2, 4, 4, 8, 2, 4, 2, 8, 6, 4, 2, 8, 4, 8, 2, 4, 2, 8, 4, 4, 4, 8, 6, 8, 4, 4, 2, 8, 6, 4, 2, 6, 4, 12, 4, 4, 4, 16, 4, 4, 4, 4, 4, 8, 2, 8, 2, 16, 4, 4, 4, 4, 4, 8, 4, 4, 2, 8, 8, 4, 6, 4, 8, 16, 2, 8, 4, 8, 4, 4, 4, 8, 6, 16, 2]

cp's OEIS Frontend

A193432 Number of divisors of n^2 + 1.

Table of values

List of values

n	a(n)
0	1
1	2
2	2
3	4
4	2
5	4
6	2
7	6
8	4
9	4
10	2
11	4
12	4
13	8
14	2
15	4
16	2
17	8
18	6
19	4
20	2
21	8
22	4
23	8
24	2
25	4
26	2
27	8
28	4
29	4
30	4
31	8
32	6
33	8
34	4
35	4
36	2
37	8
38	6
39	4
40	2
41	6
42	4
43	12
44	4
45	4
46	4
47	16
48	4
49	4
50	4
51	4
52	4
53	8
54	2
55	8
56	2
57	16
58	4
59	4
60	4
61	4
62	4
63	8
64	4
65	4
66	2
67	8
68	8
69	4
70	6
71	4
72	8
73	16
74	2
75	8
76	4
77	8
78	4
79	4
80	4
81	8
82	6
83	16
84	2

n	a(n)
0	1
1	2
2	2
3	4
4	2
5	4
6	2
7	6
8	4
9	4
10	2
11	4
12	4
13	8
14	2
15	4
16	2
17	8
18	6
19	4
20	2
21	8
22	4
23	8
24	2
25	4
26	2
27	8
28	4
29	4
30	4
31	8
32	6
33	8
34	4
35	4
36	2
37	8
38	6
39	4
40	2
41	6
42	4
43	12
44	4
45	4
46	4
47	16
48	4
49	4
50	4
51	4
52	4
53	8
54	2
55	8
56	2
57	16
58	4
59	4
60	4
61	4
62	4
63	8
64	4
65	4
66	2
67	8
68	8
69	4
70	6
71	4
72	8
73	16
74	2
75	8
76	4
77	8
78	4
79	4
80	4
81	8
82	6
83	16
84	2

n	a(n)
0	1
1	2
2	2
3	4
4	2
5	4
6	2
7	6
8	4
9	4
10	2
11	4
12	4
13	8
14	2
15	4
16	2
17	8
18	6
19	4
20	2
21	8
22	4
23	8
24	2
25	4
26	2
27	8
28	4
29	4
30	4
31	8
32	6
33	8
34	4
35	4
36	2
37	8
38	6
39	4
40	2
41	6
42	4
43	12
44	4
45	4
46	4
47	16
48	4
49	4
50	4
51	4
52	4
53	8
54	2
55	8
56	2
57	16
58	4
59	4
60	4
61	4
62	4
63	8
64	4
65	4
66	2
67	8
68	8
69	4
70	6
71	4
72	8
73	16
74	2
75	8
76	4
77	8
78	4
79	4
80	4
81	8
82	6
83	16
84	2