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A155305 as a simple table

n a(n)
4 1
5 7
6 25
7 64
8 217
9 1298
10 10738
11 90390
12 827265
13 9950319
14 159818687
15 3209355205
16 75527888278
17 2156343784054 

[1,7,25,64,217,1298,10738,90390,827265,9950319,
 159818687,3209355205,75527888278,2156343784054]

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Last modified May 18 15:21 EDT 2013. Contains 225422 sequences.