A102644 - OEIS

A102644 as a simple table

n	a(n)
1	2
2	3
3	7
4	13
5	31
6	61
7	127
8	127
9	73
10	1021
11	89
12	4093
13	8191
14	16381
15	151
16	257
17	131071
18	131071
19	524287
20	1048573
21	337
22	683
23	178481
24	16777213
25	1801
26	8191
27	262657
28	1877171
29	2089
30	46684427
31	2147483647
32	2147483647
33	599479
34	3360037
35	6871947673
36	283007

[2,3,7,13,31,61,127,127,73,1021,89,4093,8191, 16381,151,257,131071,131071,524287,1048573,337, 683,178481,16777213,1801,8191,262657,1877171,2089, 46684427,2147483647,2147483647,599479,3360037, 6871947673,283007]