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A050258 as a simple table

n a(n)
1 1
2 2
3 5
4 12
5 38
6 166
7 899
8 4768
9 28388
10 180529
11 1209318
12 8398278
13 60070590
14 441296836
15 3314576487
16 25379433651 

[1,2,5,12,38,166,899,4768,28388,180529,1209318,
 8398278,60070590,441296836,3314576487,25379433651]

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Last modified May 19 22:13 EDT 2013. Contains 225436 sequences.