A208936 - cp's OEIS frontend

A208936 Prime production length of the polynomial P = x^2 + x + prime(n): max { k>0 | P(x) is prime for all x=0,...,k-1 }.

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

[1, 2, 4, 1, 10, 1, 16, 1, 1, 2, 1, 1, 40, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 4, 1, 3, 1, 1, 1, 1, 2, 1, 2, 1, 1, 1, 1, 1, 2, 1, 3, 1, 2, 1, 1, 1, 4, 1, 1, 2, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 3, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 1]

cp's OEIS Frontend

A208936 Prime production length of the polynomial P = x^2 + x + prime(n): max { k>0 | P(x) is prime for all x=0,...,k-1 }.

Table of values

List of values

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

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

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