A391685 - OEIS

A391685 as a simple table

n	a(n)
0	1
1	5
2	7
3	9
4	23
5	31
6	13
7	39
8	95
9	127
10	17
11	55
12	159
13	383
14	511
15	21
16	71
17	223
18	639
19	1535
20	2047
21	25
22	87
23	287
24	895
25	2559
26	6143
27	8191
28	29
29	103
30	351
31	1151
32	3583
33	10239
34	24575
35	32767
36	33
37	119
38	415
39	1407
40	4607
41	14335
42	40959
43	98303
44	131071
45	37
46	135
47	479
48	1663
49	5631
50	18431
51	57343
52	163839
53	393215
54	524287

[1,5,7,9,23,31,13,39,95,127,17,55,159,383,511,21, 71,223,639,1535,2047,25,87,287,895,2559,6143,8191, 29,103,351,1151,3583,10239,24575,32767,33,119,415, 1407,4607,14335,40959,98303,131071,37,135,479, 1663,5631,18431,57343,163839,393215,524287]