A391851 - OEIS

A391851 as a simple table

n	a(n)
1	1
2	3
3	5
4	15
5	17
6	21
7	31
8	33
9	51
10	63
11	65
12	85
13	127
14	129
15	195
16	255
17	257
18	273
19	341
20	387
21	511
22	513
23	529
24	545
25	645
26	771
27	819
28	1023
29	1025
30	1041
31	1057
32	1089
33	1285
34	1365
35	1539
36	2047
37	2049
38	2065
39	2081
40	2113
41	2177
42	2565
43	2581
44	2693
45	3075
46	3123
47	3267
48	3855
49	4095
50	4097
51	4113
52	4129
53	4161
54	4225
55	4353
56	4369
57	5125
58	5141
59	5381
60	5461

[1,3,5,15,17,21,31,33,51,63,65,85,127,129,195,255, 257,273,341,387,511,513,529,545,645,771,819,1023, 1025,1041,1057,1089,1285,1365,1539,2047,2049,2065, 2081,2113,2177,2565,2581,2693,3075,3123,3267,3855, 4095,4097,4113,4129,4161,4225,4353,4369,5125,5141, 5381,5461]