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A003020 formatted as a simple table:

n a(n)
2 11
3 37
4 101
5 271
6 37
7 4649
8 137
9 333667
10 9091
11 513239
12 9901
13 265371653
14 909091
15 2906161
16 5882353
17 5363222357
18 333667
19 1111111111111111111
20 27961
21 10838689
22 513239
23 11111111111111111111111
24 99990001
25 182521213001
26 1058313049

[11,37,101,271,37,4649,137,333667,9091,513239,
 9901,265371653,909091,2906161,5882353,5363222357,
 333667,1111111111111111111,27961,10838689,513239,
 11111111111111111111111,99990001,182521213001,
 1058313049]

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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