A049421 - cp's OEIS frontend

A049421 Composite numbers k such that k!/k# - 1 is prime, where k# = primorial numbers A034386.

n	a(n)
1	4
2	6
3	8
4	16
5	21
6	34
7	39
8	45
9	50
10	72
11	76
12	133
13	164
14	202
15	216
16	221
17	280
18	496
19	605
20	2532
21	2967
22	3337
23	8711
24	10977
25	13724
26	15250
27	18160
28	20943
29	33684
30	41400

[4, 6, 8, 16, 21, 34, 39, 45, 50, 72, 76, 133, 164, 202, 216, 221, 280, 496, 605, 2532, 2967, 3337, 8711, 10977, 13724, 15250, 18160, 20943, 33684, 41400]

cp's OEIS Frontend

A049421 Composite numbers k such that k!/k# - 1 is prime, where k# = primorial numbers A034386.

Table of values

List of values