A262443 - cp's OEIS frontend

A262443 Positive integers m such that pi(m^2) = pi(j^2)*pi(k^2) for some 0 < j < k < m, where pi(x) denotes the number of primes not exceeding x.

n	a(n)
1	8
2	11
3	14
4	19
5	20
6	36
7	38
8	45
9	66
10	87
11	91
12	115
13	139
14	143
15	152
16	155
17	201
18	220
19	227
20	279
21	357
22	383
23	391
24	415
25	418
26	452
27	476
28	480
29	489
30	496
31	500
32	514
33	521
34	524
35	549
36	552
37	557
38	588
39	595
40	632
41	653
42	676
43	706
44	708
45	749
46	753
47	761
48	766
49	820
50	846
51	863
52	877
53	922
54	1009
55	1038
56	1041
57	1044
58	1052
59	1057
60	1080

[8, 11, 14, 19, 20, 36, 38, 45, 66, 87, 91, 115, 139, 143, 152, 155, 201, 220, 227, 279, 357, 383, 391, 415, 418, 452, 476, 480, 489, 496, 500, 514, 521, 524, 549, 552, 557, 588, 595, 632, 653, 676, 706, 708, 749, 753, 761, 766, 820, 846, 863, 877, 922, 1009, 1038, 1041, 1044, 1052, 1057, 1080]

cp's OEIS Frontend

A262443 Positive integers m such that pi(m^2) = pi(j^2)*pi(k^2) for some 0 < j < k < m, where pi(x) denotes the number of primes not exceeding x.

Table of values

List of values