A291122 - cp's OEIS frontend

A291122 Numbers k such that k!4 + 2^2 is prime, where k!4 = k!!!! is the quadruple factorial number (A007662).

n	a(n)
1	0
2	1
3	3
4	15
5	17
6	19
7	23
8	25
9	27
10	29
11	35
12	49
13	63
14	79
15	87
16	105
17	139
18	319
19	339
20	409
21	441
22	477
23	1023
24	1107
25	1517
26	1557
27	1625
28	4215
29	5297
30	6291
31	6499
32	7357
33	11639
34	12963
35	13989
36	15825
37	19993
38	20535
39	35391
40	58483
41	69247

[0, 1, 3, 15, 17, 19, 23, 25, 27, 29, 35, 49, 63, 79, 87, 105, 139, 319, 339, 409, 441, 477, 1023, 1107, 1517, 1557, 1625, 4215, 5297, 6291, 6499, 7357, 11639, 12963, 13989, 15825, 19993, 20535, 35391, 58483, 69247]

cp's OEIS Frontend

A291122 Numbers k such that k!4 + 2^2 is prime, where k!4 = k!!!! is the quadruple factorial number (A007662).

Table of values

List of values