A240622 - cp's OEIS frontend

A240622 Least number k such that k!/n - 1 is prime.

n	a(n)
1	3
2	3
3	4
4	4
5	5
6	4
7	7
8	4
9	6
10	5
11	15
12	6
13	13
14	7
15	5
16	9
17	38
18	8
19	21
20	5
21	7
22	19
23	27
24	6
25	15
26	14
27	10
28	7
29	30
30	5
31	31
32	8
33	12
34	18
35	8
36	6
37	47
38	53
39	13
40	5
41	127
42	10
43	67
44	11
45	16
46	27
47	51
48	8
49	14
50	26
51	17
52	16
53	77
54	9
55	23
56	7
57	184
58	56
59	123
60	6
61	66
62	203
63	7
64	9
65	13
66	13
67	74
68	42
69	26
70	7
71	75
72	9
73	205

[3, 3, 4, 4, 5, 4, 7, 4, 6, 5, 15, 6, 13, 7, 5, 9, 38, 8, 21, 5, 7, 19, 27, 6, 15, 14, 10, 7, 30, 5, 31, 8, 12, 18, 8, 6, 47, 53, 13, 5, 127, 10, 67, 11, 16, 27, 51, 8, 14, 26, 17, 16, 77, 9, 23, 7, 184, 56, 123, 6, 66, 203, 7, 9, 13, 13, 74, 42, 26, 7, 75, 9, 205]

cp's OEIS Frontend

A240622 Least number k such that k!/n - 1 is prime.

Table of values

List of values

n	a(n)
1	3
2	3
3	4
4	4
5	5
6	4
7	7
8	4
9	6
10	5
11	15
12	6
13	13
14	7
15	5
16	9
17	38
18	8
19	21
20	5
21	7
22	19
23	27
24	6
25	15
26	14
27	10
28	7
29	30
30	5
31	31
32	8
33	12
34	18
35	8
36	6
37	47
38	53
39	13
40	5
41	127
42	10
43	67
44	11
45	16
46	27
47	51
48	8
49	14
50	26
51	17
52	16
53	77
54	9
55	23
56	7
57	184
58	56
59	123
60	6
61	66
62	203
63	7
64	9
65	13
66	13
67	74
68	42
69	26
70	7
71	75
72	9
73	205

n	a(n)
1	3
2	3
3	4
4	4
5	5
6	4
7	7
8	4
9	6
10	5
11	15
12	6
13	13
14	7
15	5
16	9
17	38
18	8
19	21
20	5
21	7
22	19
23	27
24	6
25	15
26	14
27	10
28	7
29	30
30	5
31	31
32	8
33	12
34	18
35	8
36	6
37	47
38	53
39	13
40	5
41	127
42	10
43	67
44	11
45	16
46	27
47	51
48	8
49	14
50	26
51	17
52	16
53	77
54	9
55	23
56	7
57	184
58	56
59	123
60	6
61	66
62	203
63	7
64	9
65	13
66	13
67	74
68	42
69	26
70	7
71	75
72	9
73	205

n	a(n)
1	3
2	3
3	4
4	4
5	5
6	4
7	7
8	4
9	6
10	5
11	15
12	6
13	13
14	7
15	5
16	9
17	38
18	8
19	21
20	5
21	7
22	19
23	27
24	6
25	15
26	14
27	10
28	7
29	30
30	5
31	31
32	8
33	12
34	18
35	8
36	6
37	47
38	53
39	13
40	5
41	127
42	10
43	67
44	11
45	16
46	27
47	51
48	8
49	14
50	26
51	17
52	16
53	77
54	9
55	23
56	7
57	184
58	56
59	123
60	6
61	66
62	203
63	7
64	9
65	13
66	13
67	74
68	42
69	26
70	7
71	75
72	9
73	205