A249058 - cp's OEIS frontend

A249058 a(n) = number of primes less than the square root of the (2^n)-th prime.

n	a(n)
0	0
1	0
2	1
3	2
4	4
5	5
6	7
7	9
8	12
9	17
10	24
11	32
12	45
13	61
14	82
15	114
16	154
17	215
18	293
19	404
20	557
21	766
22	1057
23	1459
24	2025
25	2800
26	3880
27	5379
28	7470
29	10368
30	14414
31	20030
32	27864
33	38745
34	53982
35	75206
36	104799
37	146151
38	203821
39	284381
40	396976
41	554303
42	774256
43	1081749
44	1511871
45	2113506

[0, 0, 1, 2, 4, 5, 7, 9, 12, 17, 24, 32, 45, 61, 82, 114, 154, 215, 293, 404, 557, 766, 1057, 1459, 2025, 2800, 3880, 5379, 7470, 10368, 14414, 20030, 27864, 38745, 53982, 75206, 104799, 146151, 203821, 284381, 396976, 554303, 774256, 1081749, 1511871, 2113506]

cp's OEIS Frontend

A249058 a(n) = number of primes less than the square root of the (2^n)-th prime.

Table of values

List of values