A117544 - cp's OEIS frontend

A117544 Least k such that Phi(n,k), the n-th cyclotomic polynomial evaluated at k, is prime.

n	a(n)
1	3
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	1
12	2
13	1
14	2
15	2
16	1
17	1
18	6
19	1
20	4
21	3
22	2
23	1
24	2
25	1
26	2
27	1
28	4
29	1
30	2
31	1
32	1
33	2
34	2
35	14
36	3
37	1
38	2
39	10
40	2
41	1
42	2
43	1
44	25
45	11
46	2
47	1
48	5
49	1
50	6
51	30
52	11
53	1
54	7
55	7
56	2
57	5
58	7
59	1
60	3
61	1
62	2
63	3
64	1
65	2
66	9
67	1
68	85
69	2
70	3
71	1
72	3
73	1
74	16
75	59
76	7
77	2
78	2
79	1
80	2
81	1
82	61
83	1
84	7
85	2
86	2
87	8
88	5
89	1
90	2
91	11
92	4
93	2
94	6
95	44
96	4
97	1
98	2
99	63

[3, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 2, 1, 2, 2, 1, 1, 6, 1, 4, 3, 2, 1, 2, 1, 2, 1, 4, 1, 2, 1, 1, 2, 2, 14, 3, 1, 2, 10, 2, 1, 2, 1, 25, 11, 2, 1, 5, 1, 6, 30, 11, 1, 7, 7, 2, 5, 7, 1, 3, 1, 2, 3, 1, 2, 9, 1, 85, 2, 3, 1, 3, 1, 16, 59, 7, 2, 2, 1, 2, 1, 61, 1, 7, 2, 2, 8, 5, 1, 2, 11, 4, 2, 6, 44, 4, 1, 2, 63]

cp's OEIS Frontend

A117544 Least k such that Phi(n,k), the n-th cyclotomic polynomial evaluated at k, is prime.

Table of values

List of values

n	a(n)
1	3
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	1
12	2
13	1
14	2
15	2
16	1
17	1
18	6
19	1
20	4
21	3
22	2
23	1
24	2
25	1
26	2
27	1
28	4
29	1
30	2
31	1
32	1
33	2
34	2
35	14
36	3
37	1
38	2
39	10
40	2
41	1
42	2
43	1
44	25
45	11
46	2
47	1
48	5
49	1
50	6
51	30
52	11
53	1
54	7
55	7
56	2
57	5
58	7
59	1
60	3
61	1
62	2
63	3
64	1
65	2
66	9
67	1
68	85
69	2
70	3
71	1
72	3
73	1
74	16
75	59
76	7
77	2
78	2
79	1
80	2
81	1
82	61
83	1
84	7
85	2
86	2
87	8
88	5
89	1
90	2
91	11
92	4
93	2
94	6
95	44
96	4
97	1
98	2
99	63

n	a(n)
1	3
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	1
12	2
13	1
14	2
15	2
16	1
17	1
18	6
19	1
20	4
21	3
22	2
23	1
24	2
25	1
26	2
27	1
28	4
29	1
30	2
31	1
32	1
33	2
34	2
35	14
36	3
37	1
38	2
39	10
40	2
41	1
42	2
43	1
44	25
45	11
46	2
47	1
48	5
49	1
50	6
51	30
52	11
53	1
54	7
55	7
56	2
57	5
58	7
59	1
60	3
61	1
62	2
63	3
64	1
65	2
66	9
67	1
68	85
69	2
70	3
71	1
72	3
73	1
74	16
75	59
76	7
77	2
78	2
79	1
80	2
81	1
82	61
83	1
84	7
85	2
86	2
87	8
88	5
89	1
90	2
91	11
92	4
93	2
94	6
95	44
96	4
97	1
98	2
99	63

n	a(n)
1	3
2	1
3	1
4	1
5	1
6	2
7	1
8	1
9	1
10	2
11	1
12	2
13	1
14	2
15	2
16	1
17	1
18	6
19	1
20	4
21	3
22	2
23	1
24	2
25	1
26	2
27	1
28	4
29	1
30	2
31	1
32	1
33	2
34	2
35	14
36	3
37	1
38	2
39	10
40	2
41	1
42	2
43	1
44	25
45	11
46	2
47	1
48	5
49	1
50	6
51	30
52	11
53	1
54	7
55	7
56	2
57	5
58	7
59	1
60	3
61	1
62	2
63	3
64	1
65	2
66	9
67	1
68	85
69	2
70	3
71	1
72	3
73	1
74	16
75	59
76	7
77	2
78	2
79	1
80	2
81	1
82	61
83	1
84	7
85	2
86	2
87	8
88	5
89	1
90	2
91	11
92	4
93	2
94	6
95	44
96	4
97	1
98	2
99	63