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A058409 formatted as a simple table:

n a(n)
0 1
1 3
2 18
3 92
4 458
5 1982
6 7928
7 28592
8 95138
9 292993
10 845027
11 2295322
12 5915631
13 14535676
14 34224682
15 77510148
16 169459010
17 358698558
18 737106306
19 1473867060
20 2873564862

[1,3,18,92,458,1982,7928,28592,95138,292993,
 845027,2295322,5915631,14535676,34224682,77510148,
 169459010,358698558,737106306,1473867060,
 2873564862]

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Last modified December 16 13:01 EST 2009. Contains 170825 sequences.


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