A391861 - OEIS

A391861 as a simple table

n	a(n)
1	1
2	3
3	5
4	7
5	9
6	15
7	21
8	63
9	65
10	73
11	85
12	99
13	127
14	129
15	189
16	191
17	253
18	255
19	257
20	261
21	321
22	341
23	383
24	509
25	511
26	513
27	517
28	521
29	577
30	585
31	641
32	693
33	701
34	703
35	757
36	765
37	767
38	771
39	1013
40	1021
41	1023
42	1025
43	1029
44	1033
45	1153
46	1281
47	1285
48	1365
49	1407
50	1533
51	1535
52	1539
53	1543
54	1795
55	2037
56	2045
57	2047
58	2049
59	2053
60	2057
61	2305
62	2309

[1,3,5,7,9,15,21,63,65,73,85,99,127,129,189,191, 253,255,257,261,321,341,383,509,511,513,517,521, 577,585,641,693,701,703,757,765,767,771,1013,1021, 1023,1025,1029,1033,1153,1281,1285,1365,1407,1533, 1535,1539,1543,1795,2037,2045,2047,2049,2053,2057, 2305,2309]