A057201 - cp's OEIS frontend

A057201 Numbers k such that 2^k + 21 is prime.

n	a(n)
1	1
2	3
3	4
4	5
5	7
6	8
7	11
8	15
9	16
10	19
11	44
12	48
13	51
14	52
15	61
16	163
17	196
18	456
19	492
20	911
21	997
22	1616
23	1631
24	1647
25	1803
26	1899
27	3112
28	3584
29	3956
30	6848
31	7023
32	9535
33	16657
34	27035
35	33843
36	36551
37	38859
38	81485
39	107287
40	131383
41	139476
42	158497
43	210061
44	216752
45	339168
46	341355
47	376731
48	1173095

[1, 3, 4, 5, 7, 8, 11, 15, 16, 19, 44, 48, 51, 52, 61, 163, 196, 456, 492, 911, 997, 1616, 1631, 1647, 1803, 1899, 3112, 3584, 3956, 6848, 7023, 9535, 16657, 27035, 33843, 36551, 38859, 81485, 107287, 131383, 139476, 158497, 210061, 216752, 339168, 341355, 376731, 1173095]

cp's OEIS Frontend

A057201 Numbers k such that 2^k + 21 is prime.

Table of values

List of values