A255401 - cp's OEIS frontend

A255401 Numbers n with the property that its k-th smallest divisor, for all 1 <= k <= tau(n), contains exactly k "1" digits in its binary representation.

n	a(n)
1	1
2	3
3	5
4	17
5	25
6	39
7	57
8	201
9	257
10	289
11	291
12	323
13	393
14	579
15	1083
16	2307
17	7955
18	8815
19	9399
20	12297
21	12909
22	13737
23	36867
24	40521
25	43797
26	50349
27	65537
28	66049
29	66291
30	66531
31	68457
32	80457
33	98313
34	160329
35	196617
36	197633
37	230691
38	299559
39	599079
40	786441
41	922179
42	1278537

[1, 3, 5, 17, 25, 39, 57, 201, 257, 289, 291, 323, 393, 579, 1083, 2307, 7955, 8815, 9399, 12297, 12909, 13737, 36867, 40521, 43797, 50349, 65537, 66049, 66291, 66531, 68457, 80457, 98313, 160329, 196617, 197633, 230691, 299559, 599079, 786441, 922179, 1278537]

cp's OEIS Frontend

A255401 Numbers n with the property that its k-th smallest divisor, for all 1 <= k <= tau(n), contains exactly k "1" digits in its binary representation.

Table of values

List of values