A192820 - cp's OEIS frontend

A192820 2-Ramanujan primes: the interval (x/2,x] has at least n Ramanujan primes for x >= a(n) but not for x = a(n) - 1.

n	a(n)
1	11
2	41
3	59
4	97
5	149
6	151
7	227
8	229
9	233
10	239
11	263
12	307
13	367
14	373
15	401
16	409
17	569
18	571
19	587
20	593
21	599
22	641
23	643
24	647
25	653
26	719
27	751
28	821
29	937
30	941
31	1009
32	1019
33	1021
34	1031
35	1049
36	1051
37	1061
38	1063
39	1217
40	1367
41	1373
42	1423
43	1427
44	1439
45	1481
46	1487
47	1549
48	1553
49	1559

[11, 41, 59, 97, 149, 151, 227, 229, 233, 239, 263, 307, 367, 373, 401, 409, 569, 571, 587, 593, 599, 641, 643, 647, 653, 719, 751, 821, 937, 941, 1009, 1019, 1021, 1031, 1049, 1051, 1061, 1063, 1217, 1367, 1373, 1423, 1427, 1439, 1481, 1487, 1549, 1553, 1559]

cp's OEIS Frontend

A192820 2-Ramanujan primes: the interval (x/2,x] has at least n Ramanujan primes for x >= a(n) but not for x = a(n) - 1.

Table of values

List of values