A245697 - cp's OEIS frontend

A245697 Least number k such that (n!+k)/n and (n!-k)/n are both prime.

n	a(n)
3	0
4	4
5	25
6	42
7	133
8	152
9	279
10	170
11	121
12	204
13	1079
14	938
15	5295
16	3632
17	2771
18	1062
19	1159
20	2260
21	7413
22	682
23	33281
24	13704
25	9725
26	4966
27	9099
28	24724
29	2929
30	54690
31	20429
32	22688
33	5379
34	46274
35	15365
36	11052
37	40441
38	65854
39	97149
40	42520
41	44731
42	83958
43	61877
44	4796
45	123885
46	27922
47	122999
48	12912
49	5047

[0, 4, 25, 42, 133, 152, 279, 170, 121, 204, 1079, 938, 5295, 3632, 2771, 1062, 1159, 2260, 7413, 682, 33281, 13704, 9725, 4966, 9099, 24724, 2929, 54690, 20429, 22688, 5379, 46274, 15365, 11052, 40441, 65854, 97149, 42520, 44731, 83958, 61877, 4796, 123885, 27922, 122999, 12912, 5047]

cp's OEIS Frontend

A245697 Least number k such that (n!+k)/n and (n!-k)/n are both prime.

Table of values

List of values