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A156325 formatted as a simple table:

n a(n)
0 1
1 1
2 4
3 34
4 482
5 10056
6 286372
7 10591372
8 491169996
9 27826318000
10 1887581200256
11 150885500428224
12 14028718134958936
13 1500672248541122944
14 182987661921689610000
15 25231215606822797450176

[1,1,4,34,482,10056,286372,10591372,491169996,
 27826318000,1887581200256,150885500428224,
 14028718134958936,1500672248541122944,
 182987661921689610000,25231215606822797450176]

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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