A083663 - cp's OEIS frontend

A083663 Least k such that k*n!-1 is prime.

n	a(n)
1	3
2	2
3	1
4	1
5	2
6	1
7	1
8	5
9	3
10	4
11	4
12	1
13	5
14	1
15	2
16	9
17	2
18	30
19	30
20	5
21	44
22	2
23	7
24	13
25	5
26	3
27	11
28	2
29	14
30	1
31	7
32	1
33	1
34	30
35	16
36	22
37	36
38	1
39	38
40	13
41	22
42	6
43	36
44	17
45	36
46	40
47	31
48	25
49	38
50	13
51	4
52	32
53	22
54	154
55	10
56	27
57	7
58	121
59	9
60	33
61	19
62	19
63	4
64	26
65	100
66	18
67	46
68	75
69	21
70	11
71	34
72	75
73	38
74	7
75	45
76	3
77	19
78	13
79	59
80	39
81	72

[3, 2, 1, 1, 2, 1, 1, 5, 3, 4, 4, 1, 5, 1, 2, 9, 2, 30, 30, 5, 44, 2, 7, 13, 5, 3, 11, 2, 14, 1, 7, 1, 1, 30, 16, 22, 36, 1, 38, 13, 22, 6, 36, 17, 36, 40, 31, 25, 38, 13, 4, 32, 22, 154, 10, 27, 7, 121, 9, 33, 19, 19, 4, 26, 100, 18, 46, 75, 21, 11, 34, 75, 38, 7, 45, 3, 19, 13, 59, 39, 72]

cp's OEIS Frontend

A083663 Least k such that k*n!-1 is prime.

Table of values

List of values

n	a(n)
1	3
2	2
3	1
4	1
5	2
6	1
7	1
8	5
9	3
10	4
11	4
12	1
13	5
14	1
15	2
16	9
17	2
18	30
19	30
20	5
21	44
22	2
23	7
24	13
25	5
26	3
27	11
28	2
29	14
30	1
31	7
32	1
33	1
34	30
35	16
36	22
37	36
38	1
39	38
40	13
41	22
42	6
43	36
44	17
45	36
46	40
47	31
48	25
49	38
50	13
51	4
52	32
53	22
54	154
55	10
56	27
57	7
58	121
59	9
60	33
61	19
62	19
63	4
64	26
65	100
66	18
67	46
68	75
69	21
70	11
71	34
72	75
73	38
74	7
75	45
76	3
77	19
78	13
79	59
80	39
81	72

n	a(n)
1	3
2	2
3	1
4	1
5	2
6	1
7	1
8	5
9	3
10	4
11	4
12	1
13	5
14	1
15	2
16	9
17	2
18	30
19	30
20	5
21	44
22	2
23	7
24	13
25	5
26	3
27	11
28	2
29	14
30	1
31	7
32	1
33	1
34	30
35	16
36	22
37	36
38	1
39	38
40	13
41	22
42	6
43	36
44	17
45	36
46	40
47	31
48	25
49	38
50	13
51	4
52	32
53	22
54	154
55	10
56	27
57	7
58	121
59	9
60	33
61	19
62	19
63	4
64	26
65	100
66	18
67	46
68	75
69	21
70	11
71	34
72	75
73	38
74	7
75	45
76	3
77	19
78	13
79	59
80	39
81	72

n	a(n)
1	3
2	2
3	1
4	1
5	2
6	1
7	1
8	5
9	3
10	4
11	4
12	1
13	5
14	1
15	2
16	9
17	2
18	30
19	30
20	5
21	44
22	2
23	7
24	13
25	5
26	3
27	11
28	2
29	14
30	1
31	7
32	1
33	1
34	30
35	16
36	22
37	36
38	1
39	38
40	13
41	22
42	6
43	36
44	17
45	36
46	40
47	31
48	25
49	38
50	13
51	4
52	32
53	22
54	154
55	10
56	27
57	7
58	121
59	9
60	33
61	19
62	19
63	4
64	26
65	100
66	18
67	46
68	75
69	21
70	11
71	34
72	75
73	38
74	7
75	45
76	3
77	19
78	13
79	59
80	39
81	72