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A133118 formatted as a simple table:

n a(n)
6 60
7 315
8 2268
9 14742
10 72180
11 464640
12 2676366
13 16400098
14 94209206
15 673282610
16 4095231104
17 29371828846
18 197547348216
19 1513916607683
20 10904464442572
21 87070803499372
22 673555061736062

[60,315,2268,14742,72180,464640,2676366,16400098,
 94209206,673282610,4095231104,29371828846,
 197547348216,1513916607683,10904464442572,
 87070803499372,673555061736062]

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Last modified December 9 14:43 EST 2009. Contains 170430 sequences.


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