A151893 - cp's OEIS frontend

A151893 a(n) = smallest number k such that n! + k-th prime after n! is prime.

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

[1, 1, 1, 1, 2, 1, 1, 2, 4, 10, 2, 4, 3, 1, 1, 4, 2, 9, 14, 1, 6, 14, 6, 5, 1, 11, 3, 35, 14, 20, 4, 1, 10, 1, 1, 6, 37, 33, 25, 17, 62, 2, 5, 26, 12, 10, 11, 37, 9, 9, 4, 50, 32, 9, 9, 7, 9, 47, 10, 40, 80, 60, 3, 18, 6, 2, 1]

cp's OEIS Frontend

A151893 a(n) = smallest number k such that n! + k-th prime after n! is prime.

Table of values

List of values

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

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

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