A109291 - OEIS

A109291 as a simple table

n	a(n)
1	3
2	7
3	13
4	29
5	1031
6	19
7	25999
8	641
9	5563
10	11
11	41
12	1409
13	11551
14	541
15	406898311
16	1597
17	31
18	8161
19	17
20	22993
21	82009
22	3101039
23	37
24	397
25	6357828601279
26	61
27	5521
28	43
29	1009
30	3613
31	23
32	303293
33	7591
34	197479
35	2650751
36	380881
37	151
38	95801
39	6660751
40	53
41	131
42	25117
43	1271899175923

[3,7,13,29,1031,19,25999,641,5563,11,41,1409, 11551,541,406898311,1597,31,8161,17,22993,82009, 3101039,37,397,6357828601279,61,5521,43,1009,3613, 23,303293,7591,197479,2650751,380881,151,95801, 6660751,53,131,25117,1271899175923]