A215235 - cp's OEIS frontend

A215235 Least number k such that the sum of the 2n+1 consecutive primes starting with prime(k) is prime.

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

[1, 3, 3, 7, 2, 3, 10, 2, 2, 5, 4, 4, 3, 4, 6, 6, 4, 3, 3, 6, 4, 4, 4, 4, 5, 7, 2, 2, 25, 10, 2, 6, 2, 8, 8, 2, 3, 2, 9, 4, 5, 16, 11, 24, 16, 8, 5, 2, 7, 9, 23, 5, 3, 15, 12, 3, 7, 2, 2, 10, 9, 3, 3, 3, 17, 4, 4, 11, 2, 19, 2, 2, 24, 20, 11, 13, 10, 2, 7, 5, 4]

cp's OEIS Frontend

A215235 Least number k such that the sum of the 2n+1 consecutive primes starting with prime(k) is prime.

Table of values

List of values

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

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

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