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A003260 as a simple table

n a(n)
1 3
2 7
3 31
4 127
5 89
6 8191
7 131071
8 524287
9 178481
10 2089
11 2147483647
12 616318177
13 164511353
14 2099863
15 13264529
16 20394401
17 3203431780337
18 2305843009213693951 

[3,7,31,127,89,8191,131071,524287,178481,2089,
 2147483647,616318177,164511353,2099863,13264529,
 20394401,3203431780337,2305843009213693951]

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Last modified April 16 05:35 EDT 2024. Contains 371697 sequences. (Running on oeis4.)