A085721 - cp's OEIS frontend

A085721 Semiprimes whose prime factors have an equal number of digits in binary representation.

n	a(n)
1	4
2	6
3	9
4	25
5	35
6	49
7	121
8	143
9	169
10	289
11	323
12	361
13	391
14	437
15	493
16	527
17	529
18	551
19	589
20	667
21	713
22	841
23	899
24	961
25	1369
26	1517
27	1591
28	1681
29	1739
30	1763
31	1849
32	1927
33	1961
34	2021
35	2173
36	2183
37	2209
38	2257
39	2279
40	2419
41	2491
42	2501
43	2537
44	2623
45	2773
46	2809

[4, 6, 9, 25, 35, 49, 121, 143, 169, 289, 323, 361, 391, 437, 493, 527, 529, 551, 589, 667, 713, 841, 899, 961, 1369, 1517, 1591, 1681, 1739, 1763, 1849, 1927, 1961, 2021, 2173, 2183, 2209, 2257, 2279, 2419, 2491, 2501, 2537, 2623, 2773, 2809]

cp's OEIS Frontend

A085721 Semiprimes whose prime factors have an equal number of digits in binary representation.

Table of values

List of values