A215935 - cp's OEIS frontend

A215935 Number of ordered pairs of primes (p, q) dividing n for which p^e = 1 mod q, where e is the exponent of p in n.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	1
11	0
12	2
13	0
14	1
15	0
16	0
17	0
18	1
19	0
20	1
21	1
22	1
23	0
24	1
25	0
26	1
27	0
28	1
29	0
30	2
31	0
32	0
33	0
34	1
35	0
36	2
37	0
38	1
39	1
40	1
41	0
42	3
43	0
44	1
45	0
46	1
47	0
48	2
49	0
50	1
51	0
52	1
53	0
54	1
55	1
56	2
57	1
58	1
59	0
60	3
61	0
62	1
63	1
64	0
65	0
66	2
67	0
68	1
69	0
70	2
71	0
72	1
73	0
74	1
75	1
76	1
77	0
78	3
79	0
80	2
81	0
82	1
83	0
84	4
85	0
86	1
87	0
88	1
89	0
90	2
91	0
92	1
93	1

[0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 2, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 2, 0, 0, 0, 1, 0, 2, 0, 1, 1, 1, 0, 3, 0, 1, 0, 1, 0, 2, 0, 1, 0, 1, 0, 1, 1, 2, 1, 1, 0, 3, 0, 1, 1, 0, 0, 2, 0, 1, 0, 2, 0, 1, 0, 1, 1, 1, 0, 3, 0, 2, 0, 1, 0, 4, 0, 1, 0, 1, 0, 2, 0, 1, 1]

cp's OEIS Frontend

A215935 Number of ordered pairs of primes (p, q) dividing n for which p^e = 1 mod q, where e is the exponent of p in n.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	1
11	0
12	2
13	0
14	1
15	0
16	0
17	0
18	1
19	0
20	1
21	1
22	1
23	0
24	1
25	0
26	1
27	0
28	1
29	0
30	2
31	0
32	0
33	0
34	1
35	0
36	2
37	0
38	1
39	1
40	1
41	0
42	3
43	0
44	1
45	0
46	1
47	0
48	2
49	0
50	1
51	0
52	1
53	0
54	1
55	1
56	2
57	1
58	1
59	0
60	3
61	0
62	1
63	1
64	0
65	0
66	2
67	0
68	1
69	0
70	2
71	0
72	1
73	0
74	1
75	1
76	1
77	0
78	3
79	0
80	2
81	0
82	1
83	0
84	4
85	0
86	1
87	0
88	1
89	0
90	2
91	0
92	1
93	1

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	1
11	0
12	2
13	0
14	1
15	0
16	0
17	0
18	1
19	0
20	1
21	1
22	1
23	0
24	1
25	0
26	1
27	0
28	1
29	0
30	2
31	0
32	0
33	0
34	1
35	0
36	2
37	0
38	1
39	1
40	1
41	0
42	3
43	0
44	1
45	0
46	1
47	0
48	2
49	0
50	1
51	0
52	1
53	0
54	1
55	1
56	2
57	1
58	1
59	0
60	3
61	0
62	1
63	1
64	0
65	0
66	2
67	0
68	1
69	0
70	2
71	0
72	1
73	0
74	1
75	1
76	1
77	0
78	3
79	0
80	2
81	0
82	1
83	0
84	4
85	0
86	1
87	0
88	1
89	0
90	2
91	0
92	1
93	1

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	1
7	0
8	0
9	0
10	1
11	0
12	2
13	0
14	1
15	0
16	0
17	0
18	1
19	0
20	1
21	1
22	1
23	0
24	1
25	0
26	1
27	0
28	1
29	0
30	2
31	0
32	0
33	0
34	1
35	0
36	2
37	0
38	1
39	1
40	1
41	0
42	3
43	0
44	1
45	0
46	1
47	0
48	2
49	0
50	1
51	0
52	1
53	0
54	1
55	1
56	2
57	1
58	1
59	0
60	3
61	0
62	1
63	1
64	0
65	0
66	2
67	0
68	1
69	0
70	2
71	0
72	1
73	0
74	1
75	1
76	1
77	0
78	3
79	0
80	2
81	0
82	1
83	0
84	4
85	0
86	1
87	0
88	1
89	0
90	2
91	0
92	1
93	1