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A002785 formatted as a simple table:

n a(n)
3 2
4 2
5 8
6 12
7 88
8 176
9 2752
10 8784
11 279968
12 1492288
13 95458560
14 872687552
15 111698291584
16 1787154671104
17 457509297625088
18 13013584213369088
19 6662951988432581120
20 341143107490935724032
21 349330527429800077778944

[2,2,8,12,88,176,2752,8784,279968,1492288,
 95458560,872687552,111698291584,1787154671104,
 457509297625088,13013584213369088,
 6662951988432581120,341143107490935724032,
 349330527429800077778944]

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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.


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