A249400 - cp's OEIS frontend

A249400 Numbers n such that n!3 + 3 is prime, where n!3 = n!!! is a triple factorial number (A007661).

n	a(n)
1	2
2	4
3	5
4	7
5	8
6	10
7	11
8	13
9	14
10	16
11	19
12	20
13	26
14	28
15	29
16	32
17	41
18	56
19	61
20	77
21	100
22	169
23	181
24	205
25	338
26	347
27	955
28	1952
29	2197
30	2428
31	2960
32	3430
33	4618
34	7478
35	8209
36	8422
37	9235
38	11107
39	13481
40	18194
41	19229
42	29854
43	46532

[2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 19, 20, 26, 28, 29, 32, 41, 56, 61, 77, 100, 169, 181, 205, 338, 347, 955, 1952, 2197, 2428, 2960, 3430, 4618, 7478, 8209, 8422, 9235, 11107, 13481, 18194, 19229, 29854, 46532]

cp's OEIS Frontend

A249400 Numbers n such that n!3 + 3 is prime, where n!3 = n!!! is a triple factorial number (A007661).

Table of values

List of values