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A134459 as a simple table

n a(n)
1 2
2 3
3 4
4 7
5 8
6 16
7 31
8 127
9 256
10 8191
11 65536
12 131071
13 524287
14 2147483647
15 2305843009213693951
16 618970019642690137449562111
17 162259276829213363391578010288127
18 170141183460469231731687303715884105727

[2,3,4,7,8,16,31,127,256,8191,65536,131071,524287,
 2147483647,2305843009213693951,
 618970019642690137449562111,
 162259276829213363391578010288127,
 170141183460469231731687303715884105727]

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Last modified April 7 15:56 EDT 2020. Contains 333306 sequences. (Running on oeis4.)