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A000043 as a simple table

n a(n)
1 2
2 3
3 5
4 7
5 13
6 17
7 19
8 31
9 61
10 89
11 107
12 127
13 521
14 607
15 1279
16 2203
17 2281
18 3217
19 4253
20 4423
21 9689
22 9941
23 11213
24 19937
25 21701
26 23209
27 44497
28 86243
29 110503
30 132049
31 216091
32 756839
33 859433
34 1257787
35 1398269
36 2976221
37 3021377
38 6972593
39 13466917
40 20996011
41 24036583
42 25964951
43 30402457
44 32582657
45 37156667
46 42643801
47 43112609

[2,3,5,7,13,17,19,31,61,89,107,127,521,607,1279,
 2203,2281,3217,4253,4423,9689,9941,11213,19937,
 21701,23209,44497,86243,110503,132049,216091,
 756839,859433,1257787,1398269,2976221,3021377,
 6972593,13466917,20996011,24036583,25964951,
 30402457,32582657,37156667,42643801,43112609]

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Last modified August 19 15:54 EDT 2018. Contains 313878 sequences. (Running on oeis4.)