A321519 - cp's OEIS frontend

A321519 Let d(n,i), i = 1..k be the k divisors of n^2 + 1 (the number 1 is not counted). a(n) is the number of ordered pairs d(n,i) < d(n,j) such that gcd(d(n,i), d(n,j)) = 1.

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	2
8	1
9	1
10	0
11	1
12	1
13	6
14	0
15	1
16	0
17	6
18	2
19	1
20	0
21	6
22	1
23	6
24	0
25	1
26	0
27	6
28	1
29	1
30	1
31	6
32	2
33	6
34	1
35	1
36	0
37	6
38	2
39	1
40	0
41	2
42	1
43	11
44	1
45	1
46	1
47	25
48	1
49	1
50	1
51	1
52	1
53	6
54	0
55	6
56	0
57	16
58	1
59	1
60	1
61	1
62	1
63	6
64	1
65	1
66	0
67	6
68	3
69	1
70	2
71	1
72	6
73	25
74	0
75	6
76	1
77	6
78	1
79	1
80	1
81	6
82	2
83	25
84	0
85	1
86	1

[0, 0, 1, 0, 1, 0, 2, 1, 1, 0, 1, 1, 6, 0, 1, 0, 6, 2, 1, 0, 6, 1, 6, 0, 1, 0, 6, 1, 1, 1, 6, 2, 6, 1, 1, 0, 6, 2, 1, 0, 2, 1, 11, 1, 1, 1, 25, 1, 1, 1, 1, 1, 6, 0, 6, 0, 16, 1, 1, 1, 1, 1, 6, 1, 1, 0, 6, 3, 1, 2, 1, 6, 25, 0, 6, 1, 6, 1, 1, 1, 6, 2, 25, 0, 1, 1]

cp's OEIS Frontend

A321519 Let d(n,i), i = 1..k be the k divisors of n^2 + 1 (the number 1 is not counted). a(n) is the number of ordered pairs d(n,i) < d(n,j) such that gcd(d(n,i), d(n,j)) = 1.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	2
8	1
9	1
10	0
11	1
12	1
13	6
14	0
15	1
16	0
17	6
18	2
19	1
20	0
21	6
22	1
23	6
24	0
25	1
26	0
27	6
28	1
29	1
30	1
31	6
32	2
33	6
34	1
35	1
36	0
37	6
38	2
39	1
40	0
41	2
42	1
43	11
44	1
45	1
46	1
47	25
48	1
49	1
50	1
51	1
52	1
53	6
54	0
55	6
56	0
57	16
58	1
59	1
60	1
61	1
62	1
63	6
64	1
65	1
66	0
67	6
68	3
69	1
70	2
71	1
72	6
73	25
74	0
75	6
76	1
77	6
78	1
79	1
80	1
81	6
82	2
83	25
84	0
85	1
86	1

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	2
8	1
9	1
10	0
11	1
12	1
13	6
14	0
15	1
16	0
17	6
18	2
19	1
20	0
21	6
22	1
23	6
24	0
25	1
26	0
27	6
28	1
29	1
30	1
31	6
32	2
33	6
34	1
35	1
36	0
37	6
38	2
39	1
40	0
41	2
42	1
43	11
44	1
45	1
46	1
47	25
48	1
49	1
50	1
51	1
52	1
53	6
54	0
55	6
56	0
57	16
58	1
59	1
60	1
61	1
62	1
63	6
64	1
65	1
66	0
67	6
68	3
69	1
70	2
71	1
72	6
73	25
74	0
75	6
76	1
77	6
78	1
79	1
80	1
81	6
82	2
83	25
84	0
85	1
86	1

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	2
8	1
9	1
10	0
11	1
12	1
13	6
14	0
15	1
16	0
17	6
18	2
19	1
20	0
21	6
22	1
23	6
24	0
25	1
26	0
27	6
28	1
29	1
30	1
31	6
32	2
33	6
34	1
35	1
36	0
37	6
38	2
39	1
40	0
41	2
42	1
43	11
44	1
45	1
46	1
47	25
48	1
49	1
50	1
51	1
52	1
53	6
54	0
55	6
56	0
57	16
58	1
59	1
60	1
61	1
62	1
63	6
64	1
65	1
66	0
67	6
68	3
69	1
70	2
71	1
72	6
73	25
74	0
75	6
76	1
77	6
78	1
79	1
80	1
81	6
82	2
83	25
84	0
85	1
86	1