A225769 - cp's OEIS frontend

A225769 Least k>0 such that k^7+n is prime, or 0 if there is no such k.

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	6
6	1
7	16
8	9
9	2
10	1
11	2
12	1
13	6
14	5
15	22
16	1
17	8
18	1
19	10
20	3
21	2
22	1
23	2
24	17
25	12
26	3
27	4
28	1
29	2
30	1
31	6
32	5
33	4
34	3
35	2
36	1
37	4
38	5
39	2
40	1
41	6
42	1
43	4
44	23
45	2
46	1
47	24
48	5
49	4
50	3
51	2
52	1
53	2
54	5
55	6
56	3
57	28
58	1
59	8
60	1
61	22
62	39
63	2
64	3
65	2
66	1
67	4
68	5
69	2
70	1
71	2
72	1
73	6
74	9
75	34
76	7
77	6
78	1
79	10
80	3
81	16
82	1
83	2
84	23
85	22
86	3
87	14
88	1
89	14
90	23
91	12
92	9
93	4
94	3
95	2
96	1
97	4
98	9
99	2
100	1
101	2
102	1
103	4
104	5
105	2
106	1
107	8
108	1
109	4
110	3
111	2
112	1
113	2
114	23
115	12
116	5
117	40
118	31
119	92
120	7

[0, 1, 1, 2, 1, 6, 1, 16, 9, 2, 1, 2, 1, 6, 5, 22, 1, 8, 1, 10, 3, 2, 1, 2, 17, 12, 3, 4, 1, 2, 1, 6, 5, 4, 3, 2, 1, 4, 5, 2, 1, 6, 1, 4, 23, 2, 1, 24, 5, 4, 3, 2, 1, 2, 5, 6, 3, 28, 1, 8, 1, 22, 39, 2, 3, 2, 1, 4, 5, 2, 1, 2, 1, 6, 9, 34, 7, 6, 1, 10, 3, 16, 1, 2, 23, 22, 3, 14, 1, 14, 23, 12, 9, 4, 3, 2, 1, 4, 9, 2, 1, 2, 1, 4, 5, 2, 1, 8, 1, 4, 3, 2, 1, 2, 23, 12, 5, 40, 31, 92, 7]

cp's OEIS Frontend

A225769 Least k>0 such that k^7+n is prime, or 0 if there is no such k.

Table of values

List of values

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	6
6	1
7	16
8	9
9	2
10	1
11	2
12	1
13	6
14	5
15	22
16	1
17	8
18	1
19	10
20	3
21	2
22	1
23	2
24	17
25	12
26	3
27	4
28	1
29	2
30	1
31	6
32	5
33	4
34	3
35	2
36	1
37	4
38	5
39	2
40	1
41	6
42	1
43	4
44	23
45	2
46	1
47	24
48	5
49	4
50	3
51	2
52	1
53	2
54	5
55	6
56	3
57	28
58	1
59	8
60	1
61	22
62	39
63	2
64	3
65	2
66	1
67	4
68	5
69	2
70	1
71	2
72	1
73	6
74	9
75	34
76	7
77	6
78	1
79	10
80	3
81	16
82	1
83	2
84	23
85	22
86	3
87	14
88	1
89	14
90	23
91	12
92	9
93	4
94	3
95	2
96	1
97	4
98	9
99	2
100	1
101	2
102	1
103	4
104	5
105	2
106	1
107	8
108	1
109	4
110	3
111	2
112	1
113	2
114	23
115	12
116	5
117	40
118	31
119	92
120	7

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	6
6	1
7	16
8	9
9	2
10	1
11	2
12	1
13	6
14	5
15	22
16	1
17	8
18	1
19	10
20	3
21	2
22	1
23	2
24	17
25	12
26	3
27	4
28	1
29	2
30	1
31	6
32	5
33	4
34	3
35	2
36	1
37	4
38	5
39	2
40	1
41	6
42	1
43	4
44	23
45	2
46	1
47	24
48	5
49	4
50	3
51	2
52	1
53	2
54	5
55	6
56	3
57	28
58	1
59	8
60	1
61	22
62	39
63	2
64	3
65	2
66	1
67	4
68	5
69	2
70	1
71	2
72	1
73	6
74	9
75	34
76	7
77	6
78	1
79	10
80	3
81	16
82	1
83	2
84	23
85	22
86	3
87	14
88	1
89	14
90	23
91	12
92	9
93	4
94	3
95	2
96	1
97	4
98	9
99	2
100	1
101	2
102	1
103	4
104	5
105	2
106	1
107	8
108	1
109	4
110	3
111	2
112	1
113	2
114	23
115	12
116	5
117	40
118	31
119	92
120	7

n	a(n)
0	0
1	1
2	1
3	2
4	1
5	6
6	1
7	16
8	9
9	2
10	1
11	2
12	1
13	6
14	5
15	22
16	1
17	8
18	1
19	10
20	3
21	2
22	1
23	2
24	17
25	12
26	3
27	4
28	1
29	2
30	1
31	6
32	5
33	4
34	3
35	2
36	1
37	4
38	5
39	2
40	1
41	6
42	1
43	4
44	23
45	2
46	1
47	24
48	5
49	4
50	3
51	2
52	1
53	2
54	5
55	6
56	3
57	28
58	1
59	8
60	1
61	22
62	39
63	2
64	3
65	2
66	1
67	4
68	5
69	2
70	1
71	2
72	1
73	6
74	9
75	34
76	7
77	6
78	1
79	10
80	3
81	16
82	1
83	2
84	23
85	22
86	3
87	14
88	1
89	14
90	23
91	12
92	9
93	4
94	3
95	2
96	1
97	4
98	9
99	2
100	1
101	2
102	1
103	4
104	5
105	2
106	1
107	8
108	1
109	4
110	3
111	2
112	1
113	2
114	23
115	12
116	5
117	40
118	31
119	92
120	7