A245756 - cp's OEIS frontend

A245756 Least number k such that (k! + n)/k is prime, or 0 if no such k exists.

n	a(n)
1	1
2	1
3	3
4	1
5	0
6	1
7	0
8	2
9	3
10	1
11	0
12	1
13	0
14	0
15	3
16	1
17	0
18	1
19	0
20	2
21	0
22	1
23	0
24	2
25	5
26	0
27	3
28	1
29	0
30	1
31	0
32	2
33	3
34	0
35	5
36	1
37	0
38	38
39	0
40	1
41	0
42	1
43	0
44	2
45	3
46	1
47	0
48	0
49	7
50	0
51	3
52	1
53	0
54	0
55	0
56	2
57	0
58	1
59	0
60	1
61	0
62	0
63	3
64	0
65	5
66	1
67	0
68	4
69	0
70	1
71	0
72	1
73	0
74	74
75	0
76	0
77	0
78	1
79	0
80	2
81	3
82	1
83	0
84	2
85	5
86	0
87	3

[1, 1, 3, 1, 0, 1, 0, 2, 3, 1, 0, 1, 0, 0, 3, 1, 0, 1, 0, 2, 0, 1, 0, 2, 5, 0, 3, 1, 0, 1, 0, 2, 3, 0, 5, 1, 0, 38, 0, 1, 0, 1, 0, 2, 3, 1, 0, 0, 7, 0, 3, 1, 0, 0, 0, 2, 0, 1, 0, 1, 0, 0, 3, 0, 5, 1, 0, 4, 0, 1, 0, 1, 0, 74, 0, 0, 0, 1, 0, 2, 3, 1, 0, 2, 5, 0, 3]

cp's OEIS Frontend

A245756 Least number k such that (k! + n)/k is prime, or 0 if no such k exists.

Table of values

List of values

n	a(n)
1	1
2	1
3	3
4	1
5	0
6	1
7	0
8	2
9	3
10	1
11	0
12	1
13	0
14	0
15	3
16	1
17	0
18	1
19	0
20	2
21	0
22	1
23	0
24	2
25	5
26	0
27	3
28	1
29	0
30	1
31	0
32	2
33	3
34	0
35	5
36	1
37	0
38	38
39	0
40	1
41	0
42	1
43	0
44	2
45	3
46	1
47	0
48	0
49	7
50	0
51	3
52	1
53	0
54	0
55	0
56	2
57	0
58	1
59	0
60	1
61	0
62	0
63	3
64	0
65	5
66	1
67	0
68	4
69	0
70	1
71	0
72	1
73	0
74	74
75	0
76	0
77	0
78	1
79	0
80	2
81	3
82	1
83	0
84	2
85	5
86	0
87	3

n	a(n)
1	1
2	1
3	3
4	1
5	0
6	1
7	0
8	2
9	3
10	1
11	0
12	1
13	0
14	0
15	3
16	1
17	0
18	1
19	0
20	2
21	0
22	1
23	0
24	2
25	5
26	0
27	3
28	1
29	0
30	1
31	0
32	2
33	3
34	0
35	5
36	1
37	0
38	38
39	0
40	1
41	0
42	1
43	0
44	2
45	3
46	1
47	0
48	0
49	7
50	0
51	3
52	1
53	0
54	0
55	0
56	2
57	0
58	1
59	0
60	1
61	0
62	0
63	3
64	0
65	5
66	1
67	0
68	4
69	0
70	1
71	0
72	1
73	0
74	74
75	0
76	0
77	0
78	1
79	0
80	2
81	3
82	1
83	0
84	2
85	5
86	0
87	3

n	a(n)
1	1
2	1
3	3
4	1
5	0
6	1
7	0
8	2
9	3
10	1
11	0
12	1
13	0
14	0
15	3
16	1
17	0
18	1
19	0
20	2
21	0
22	1
23	0
24	2
25	5
26	0
27	3
28	1
29	0
30	1
31	0
32	2
33	3
34	0
35	5
36	1
37	0
38	38
39	0
40	1
41	0
42	1
43	0
44	2
45	3
46	1
47	0
48	0
49	7
50	0
51	3
52	1
53	0
54	0
55	0
56	2
57	0
58	1
59	0
60	1
61	0
62	0
63	3
64	0
65	5
66	1
67	0
68	4
69	0
70	1
71	0
72	1
73	0
74	74
75	0
76	0
77	0
78	1
79	0
80	2
81	3
82	1
83	0
84	2
85	5
86	0
87	3