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A002469 formatted as a simple table:

n a(n)
2 0
3 0
4 1
5 5
6 31
7 203
8 1501
9 12449
10 114955
11 1171799
12 13082617
13 158860349
14 2085208951
15 29427878435
16 444413828821
17 7151855533913

[0,0,1,5,31,203,1501,12449,114955,1171799,
 13082617,158860349,2085208951,29427878435,
 444413828821,7151855533913]

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.


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