A302707 - cp's OEIS frontend

A302707 Number of factors of Chebyshev polynomial S(2*n+1, x) (A049310) over the integers. Factorization is into the minimal integer polynomials C (A187360).

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

[1, 2, 4, 3, 4, 6, 4, 4, 7, 6, 4, 8, 4, 6, 10, 5, 4, 10, 4, 8, 10, 6, 4, 10, 7, 6, 10, 8, 4, 14, 4, 6, 10, 6, 10, 13, 4, 6, 10, 10, 4, 14, 4, 8, 16, 6, 4, 12, 7, 10, 10, 8, 4, 14, 10, 10, 10, 6, 4, 18, 4, 6, 16, 7, 10, 14, 4, 8, 10, 14, 4, 16, 4, 6, 16, 8, 10, 14, 4, 12, 13]

cp's OEIS Frontend

A302707 Number of factors of Chebyshev polynomial S(2*n+1, x) (A049310) over the integers. Factorization is into the minimal integer polynomials C (A187360).

Table of values

List of values

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

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

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