A152021 - cp's OEIS frontend

A152021 Numbers a(n) are obtained by the direct application of sieve of Eratosthenes for A000695: retaining A000695(2)=4, we delete all multiples of 4, which are more than 4; retaining A000695(3)=5, we delete all multiples of 5, which are more than 5, etc.

n	a(n)
1	4
2	5
3	17
4	21
5	69
6	81
7	257
8	261
9	277
10	321
11	337
12	341
13	1041
14	1089
15	1093
16	1109
17	1297
18	1301
19	1349
20	1361
21	4101
22	4113
23	4117
24	4161
25	4177
26	4181
27	4353
28	4357
29	4373
30	4417
31	4421
32	5121
33	5137
34	5141
35	5189
36	5201
37	5377
38	5381
39	5393
40	5441
41	5461
42	16389
43	16449
44	16453
45	16469
46	16641

[4, 5, 17, 21, 69, 81, 257, 261, 277, 321, 337, 341, 1041, 1089, 1093, 1109, 1297, 1301, 1349, 1361, 4101, 4113, 4117, 4161, 4177, 4181, 4353, 4357, 4373, 4417, 4421, 5121, 5137, 5141, 5189, 5201, 5377, 5381, 5393, 5441, 5461, 16389, 16449, 16453, 16469, 16641]

cp's OEIS Frontend

A152021 Numbers a(n) are obtained by the direct application of sieve of Eratosthenes for A000695: retaining A000695(2)=4, we delete all multiples of 4, which are more than 4; retaining A000695(3)=5, we delete all multiples of 5, which are more than 5, etc.

Table of values

List of values