A101693 - OEIS

A101693 as a simple table

n	a(n)
0	1
1	1
2	5
3	1
4	21
5	1
6	5
7	17
8	341
9	1
10	5
11	17
12	85
13	257
14	1285
15	4369
16	87381
17	1
18	5
19	17
20	85
21	257
22	1285
23	4369
24	21845
25	65537
26	327685
27	1114129
28	5570645
29	16843009
30	84215045
31	286331153
32	5726623061
33	1
34	5
35	17
36	85
37	257
38	1285
39	4369
40	21845
41	65537
42	327685
43	1114129
44	5570645

[1,1,5,1,21,1,5,17,341,1,5,17,85,257,1285,4369, 87381,1,5,17,85,257,1285,4369,21845,65537,327685, 1114129,5570645,16843009,84215045,286331153, 5726623061,1,5,17,85,257,1285,4369,21845,65537, 327685,1114129,5570645]