A093623 - cp's OEIS frontend

A093623 Smallest k>0 such that n!/k!-1 is prime.

n	a(n)
3	1
4	1
5	2
6	1
7	1
8	3
9	2
10	6
11	3
12	1
13	8
14	1
15	4
16	3
17	3
18	3
19	5
20	3
21	15
22	13
23	13
24	10
25	8
26	4
27	5
28	12
29	14
30	1
31	2
32	1
33	1
34	5
35	13
36	11
37	11
38	1
39	25
40	4
41	2
42	32
43	3
44	4
45	15
46	9
47	10
48	34
49	16
50	3
51	5
52	23
53	13
54	30
55	3
56	13
57	7
58	34
59	3
60	21
61	22
62	9
63	10
64	15
65	7
66	26
67	51
68	42
69	18
70	6
71	6
72	31
73	23
74	31
75	51
76	12
77	20
78	8
79	24
80	50
81	40
82	4
83	30
84	49
85	36
86	4
87	23

[1, 1, 2, 1, 1, 3, 2, 6, 3, 1, 8, 1, 4, 3, 3, 3, 5, 3, 15, 13, 13, 10, 8, 4, 5, 12, 14, 1, 2, 1, 1, 5, 13, 11, 11, 1, 25, 4, 2, 32, 3, 4, 15, 9, 10, 34, 16, 3, 5, 23, 13, 30, 3, 13, 7, 34, 3, 21, 22, 9, 10, 15, 7, 26, 51, 42, 18, 6, 6, 31, 23, 31, 51, 12, 20, 8, 24, 50, 40, 4, 30, 49, 36, 4, 23]

cp's OEIS Frontend

A093623 Smallest k>0 such that n!/k!-1 is prime.

Table of values

List of values

n	a(n)
3	1
4	1
5	2
6	1
7	1
8	3
9	2
10	6
11	3
12	1
13	8
14	1
15	4
16	3
17	3
18	3
19	5
20	3
21	15
22	13
23	13
24	10
25	8
26	4
27	5
28	12
29	14
30	1
31	2
32	1
33	1
34	5
35	13
36	11
37	11
38	1
39	25
40	4
41	2
42	32
43	3
44	4
45	15
46	9
47	10
48	34
49	16
50	3
51	5
52	23
53	13
54	30
55	3
56	13
57	7
58	34
59	3
60	21
61	22
62	9
63	10
64	15
65	7
66	26
67	51
68	42
69	18
70	6
71	6
72	31
73	23
74	31
75	51
76	12
77	20
78	8
79	24
80	50
81	40
82	4
83	30
84	49
85	36
86	4
87	23

n	a(n)
3	1
4	1
5	2
6	1
7	1
8	3
9	2
10	6
11	3
12	1
13	8
14	1
15	4
16	3
17	3
18	3
19	5
20	3
21	15
22	13
23	13
24	10
25	8
26	4
27	5
28	12
29	14
30	1
31	2
32	1
33	1
34	5
35	13
36	11
37	11
38	1
39	25
40	4
41	2
42	32
43	3
44	4
45	15
46	9
47	10
48	34
49	16
50	3
51	5
52	23
53	13
54	30
55	3
56	13
57	7
58	34
59	3
60	21
61	22
62	9
63	10
64	15
65	7
66	26
67	51
68	42
69	18
70	6
71	6
72	31
73	23
74	31
75	51
76	12
77	20
78	8
79	24
80	50
81	40
82	4
83	30
84	49
85	36
86	4
87	23

n	a(n)
3	1
4	1
5	2
6	1
7	1
8	3
9	2
10	6
11	3
12	1
13	8
14	1
15	4
16	3
17	3
18	3
19	5
20	3
21	15
22	13
23	13
24	10
25	8
26	4
27	5
28	12
29	14
30	1
31	2
32	1
33	1
34	5
35	13
36	11
37	11
38	1
39	25
40	4
41	2
42	32
43	3
44	4
45	15
46	9
47	10
48	34
49	16
50	3
51	5
52	23
53	13
54	30
55	3
56	13
57	7
58	34
59	3
60	21
61	22
62	9
63	10
64	15
65	7
66	26
67	51
68	42
69	18
70	6
71	6
72	31
73	23
74	31
75	51
76	12
77	20
78	8
79	24
80	50
81	40
82	4
83	30
84	49
85	36
86	4
87	23