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A018468 as a simple table

n a(n)
1 1
2 2
3 3
4 6
5 7
6 11
7 14
8 21
9 22
10 33
11 42
12 66
13 77
14 154
15 231
16 462 

[1,2,3,6,7,11,14,21,22,33,42,66,77,154,231,462]

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Last modified May 21 12:40 EDT 2013. Contains 225484 sequences.