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A127482 formatted as a simple table:

n a(n)
1 2
2 6
3 30
4 210
5 210
6 630
7 4410
8 39690
9 238140
10 4286520
11 12859560
12 270050760
13 1080203040
14 12962436480
15 362948221440
16 5444223321600
17 244990049472000
18 1469940296832000
19 61737492466944000
20 432162447268608000

[2,6,30,210,210,630,4410,39690,238140,4286520,
 12859560,270050760,1080203040,12962436480,
 362948221440,5444223321600,244990049472000,
 1469940296832000,61737492466944000,
 432162447268608000]

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Last modified December 6 19:58 EST 2009. Contains 170429 sequences.


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