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A013554 formatted as a simple table:

n a(n)
0 2
1 0
2 126
3 25
4 51326
5 10929
6 399223
7 19660361
8 452803663896
9 100636857978
10 5246019768064285
11 1177349661754531
12 165748040744729226
13 27301091307299787326 

[2,0,126,25,51326,10929,399223,19660361,
 452803663896,100636857978,5246019768064285,
 1177349661754531,165748040744729226,
 27301091307299787326]

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Last modified December 4 15:11 EST 2009. Contains 170347 sequences.

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