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A007075 formatted as a simple table:

n a(n)
1 1
2 2
3 5
4 13
5 35
6 95
7 260
8 714
9 1965
10 5415
11 14934
12 41206
13 113730
14 313958
15 866801
16 2393315
17 6608473
18 18248017
19 50389350
20 139144906
21 384237186

[1,2,5,13,35,95,260,714,1965,5415,14934,41206,
 113730,313958,866801,2393315,6608473,18248017,
 50389350,139144906,384237186]

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Last modified December 11 12:57 EST 2009. Contains 170656 sequences.


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