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A006686 as a simple table

n a(n)
1 2
2 257
3 65537
4 2070241
5 100006561
6 435746497
7 815730977
8 832507937
9 1475795617
10 2579667841
11 4338014017
12 5110698017
13 6975822977
14 16983628577
15 17995718017
16 25605764801
17 32575757441
18 37822859617
19 37839636577
20 54875880097 

[2,257,65537,2070241,100006561,435746497,
 815730977,832507937,1475795617,2579667841,
 4338014017,5110698017,6975822977,16983628577,
 17995718017,25605764801,32575757441,37822859617,
 37839636577,54875880097]

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Last modified April 24 13:19 EDT 2024. Contains 371953 sequences. (Running on oeis4.)