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A003681 as a simple table

n a(n)
1 2
2 3
3 5
4 7
5 11
6 13
7 17
8 107
9 197
10 3293
11 74057
12 1124491
13 1225063003
14 48403915086083
15 229199690093487791653
16 139394989871393443893426292667
17 2310767115930351361890156080500119173238113
18 521722354210765171422123515738862106081757768167379798858040637

[2,3,5,7,11,13,17,107,197,3293,74057,1124491,
 1225063003,48403915086083,229199690093487791653,
 139394989871393443893426292667,
 2310767115930351361890156080500119173238113,
 52172235421076517142212351573886210608175776816737\
 9798858040637]

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Last modified November 20 13:24 EST 2019. Contains 329336 sequences. (Running on oeis4.)