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A067678 formatted as a simple table:

n a(n)
1 2
2 8
3 12
4 600
5 5082
6 13680
7 17160
8 25920
9 265200
10 1256640
11 3591600
12 23919840
13 42923520
14 351195264
15 1642291200
16 12572386944
17 15043279104 

[2,8,12,600,5082,13680,17160,25920,265200,1256640,
 3591600,23919840,42923520,351195264,1642291200,
 12572386944,15043279104]

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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