A093621 - cp's OEIS frontend

A093621 Smallest k>0 such that n!/k!+1 is prime.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	4
7	2
8	2
9	4
10	3
11	1
12	5
13	2
14	3
15	4
16	2
17	3
18	5
19	19
20	10
21	3
22	5
23	4
24	5
25	7
26	5
27	1
28	6
29	21
30	2
31	9
32	15
33	15
34	13
35	10
36	27
37	1
38	4
39	37
40	14
41	1
42	4
43	2
44	34
45	5
46	8
47	18
48	24
49	2
50	13
51	5
52	11
53	35
54	48
55	11
56	7
57	48
58	27
59	21
60	30
61	5
62	43
63	7
64	4
65	46
66	13
67	24
68	16
69	60
70	12
71	34
72	5
73	1
74	38
75	14
76	28
77	1
78	10
79	24
80	50
81	5
82	3
83	42
84	40
85	28

[1, 1, 1, 1, 2, 2, 4, 2, 2, 4, 3, 1, 5, 2, 3, 4, 2, 3, 5, 19, 10, 3, 5, 4, 5, 7, 5, 1, 6, 21, 2, 9, 15, 15, 13, 10, 27, 1, 4, 37, 14, 1, 4, 2, 34, 5, 8, 18, 24, 2, 13, 5, 11, 35, 48, 11, 7, 48, 27, 21, 30, 5, 43, 7, 4, 46, 13, 24, 16, 60, 12, 34, 5, 1, 38, 14, 28, 1, 10, 24, 50, 5, 3, 42, 40, 28]

cp's OEIS Frontend

A093621 Smallest k>0 such that n!/k!+1 is prime.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	4
7	2
8	2
9	4
10	3
11	1
12	5
13	2
14	3
15	4
16	2
17	3
18	5
19	19
20	10
21	3
22	5
23	4
24	5
25	7
26	5
27	1
28	6
29	21
30	2
31	9
32	15
33	15
34	13
35	10
36	27
37	1
38	4
39	37
40	14
41	1
42	4
43	2
44	34
45	5
46	8
47	18
48	24
49	2
50	13
51	5
52	11
53	35
54	48
55	11
56	7
57	48
58	27
59	21
60	30
61	5
62	43
63	7
64	4
65	46
66	13
67	24
68	16
69	60
70	12
71	34
72	5
73	1
74	38
75	14
76	28
77	1
78	10
79	24
80	50
81	5
82	3
83	42
84	40
85	28

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	4
7	2
8	2
9	4
10	3
11	1
12	5
13	2
14	3
15	4
16	2
17	3
18	5
19	19
20	10
21	3
22	5
23	4
24	5
25	7
26	5
27	1
28	6
29	21
30	2
31	9
32	15
33	15
34	13
35	10
36	27
37	1
38	4
39	37
40	14
41	1
42	4
43	2
44	34
45	5
46	8
47	18
48	24
49	2
50	13
51	5
52	11
53	35
54	48
55	11
56	7
57	48
58	27
59	21
60	30
61	5
62	43
63	7
64	4
65	46
66	13
67	24
68	16
69	60
70	12
71	34
72	5
73	1
74	38
75	14
76	28
77	1
78	10
79	24
80	50
81	5
82	3
83	42
84	40
85	28

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	2
6	4
7	2
8	2
9	4
10	3
11	1
12	5
13	2
14	3
15	4
16	2
17	3
18	5
19	19
20	10
21	3
22	5
23	4
24	5
25	7
26	5
27	1
28	6
29	21
30	2
31	9
32	15
33	15
34	13
35	10
36	27
37	1
38	4
39	37
40	14
41	1
42	4
43	2
44	34
45	5
46	8
47	18
48	24
49	2
50	13
51	5
52	11
53	35
54	48
55	11
56	7
57	48
58	27
59	21
60	30
61	5
62	43
63	7
64	4
65	46
66	13
67	24
68	16
69	60
70	12
71	34
72	5
73	1
74	38
75	14
76	28
77	1
78	10
79	24
80	50
81	5
82	3
83	42
84	40
85	28