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A006947 formatted as a simple table:

n a(n)
1 2
2 7
3 35
4 219
5 1594
6 12935
7 113945
8 1070324
9 10586856
10 109259633
11 1168384157
12 12877168147
13 145656436074
14 1685157199175
15 19886174611045

[2,7,35,219,1594,12935,113945,1070324,10586856,
 109259633,1168384157,12877168147,145656436074,
 1685157199175,19886174611045]

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Last modified December 19 21:04 EST 2009. Contains 171054 sequences.


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