A279024 - cp's OEIS frontend

A279024 Number of extradivisors of n (m < n is an extradivisor of n if for some positive k < n, m | n | k^(n+1) + m and n | (n-k)^(n+1) + m).

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

[0, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 2, 1, 0, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1]

cp's OEIS Frontend

A279024 Number of extradivisors of n (m < n is an extradivisor of n if for some positive k < n, m | n | k^(n+1) + m and n | (n-k)^(n+1) + m).

Table of values

List of values

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

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

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