A256519 - cp's OEIS frontend

A256519 Composites c for which an integer 1 < k < c exists such that (c-k)! == -1 (mod c).

n	a(n)
1	25
2	121
3	169
4	437
5	551
6	667
7	721
8	1037
9	1159
10	1273
11	1349
12	1403
13	1541
14	1769
15	1943
16	2209
17	2329
18	2363
19	2419
20	3071
21	3713
22	4087
23	5041
24	5111
25	7313
26	8357
27	8479
28	9017
29	11357
30	11983
31	12673
32	16117
33	16343
34	19043
35	19099
36	19879

[25, 121, 169, 437, 551, 667, 721, 1037, 1159, 1273, 1349, 1403, 1541, 1769, 1943, 2209, 2329, 2363, 2419, 3071, 3713, 4087, 5041, 5111, 7313, 8357, 8479, 9017, 11357, 11983, 12673, 16117, 16343, 19043, 19099, 19879]

cp's OEIS Frontend

A256519 Composites c for which an integer 1 < k < c exists such that (c-k)! == -1 (mod c).

Table of values

List of values