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A228238 as a simple table

n a(n)
1 2
2 5
3 17
4 109
5 257
6 65537
7 3294173
8 145800001
9 210827009
10 13816758796289
11 167772160000000001
12 2844673747342852097
13 3874204890000000001
14 498062089990157893633
15 15191686954694985266495489
16 355271367880050092935562133789062501

[2,5,17,109,257,65537,3294173,145800001,210827009,
 13816758796289,167772160000000001,
 2844673747342852097,3874204890000000001,
 498062089990157893633,15191686954694985266495489,
 355271367880050092935562133789062501]

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Last modified April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)