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A126340 formatted as a simple table:

n a(n)
0 1
1 1
2 2
3 6
4 28
5 245
6 2100
7 26502
8 371616
9 6565104
10 125017200
11 2888063640
12 71356079520
13 2012272702440
14 60689867021784
15 2032123676705850
16 72464991800160960
17 2806386304260520800
18 115406148262413677760

[1,1,2,6,28,245,2100,26502,371616,6565104,
 125017200,2888063640,71356079520,2012272702440,
 60689867021784,2032123676705850,72464991800160960,
 2806386304260520800,115406148262413677760]

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.


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