A330590 - cp's OEIS frontend

A330590 Triangle read by rows: T(n,k) is the number of positive integers m dividing x^n - x^k for all integers x, 0 < k < n.

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

[2, 4, 2, 2, 6, 2, 8, 2, 8, 2, 2, 12, 2, 8, 2, 8, 2, 16, 2, 8, 2, 2, 18, 2, 20, 2, 8, 2, 8, 2, 24, 2, 20, 2, 8, 2, 2, 12, 2, 24, 2, 20, 2, 8, 2, 8, 2, 16, 2, 24, 2, 20, 2, 8, 2, 2, 12, 2, 20, 2, 24, 2, 20, 2, 8, 2, 32, 2, 16, 2, 24, 2, 24, 2, 20, 2, 8, 2, 2, 72]

cp's OEIS Frontend

A330590 Triangle read by rows: T(n,k) is the number of positive integers m dividing x^n - x^k for all integers x, 0 < k < n.

Table of values

List of values

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

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

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