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A083401 as a simple table

n a(n)
1 3
2 4
3 5
4 6
5 15
6 21
7 25
8 27
9 28
10 52
11 70
12 205
13 245
14 308
15 339
16 357
17 415
18 524
19 537
20 1455
21 1500

[3,4,5,6,15,21,25,27,28,52,70,205,245,308,339,357,
 415,524,537,1455,1500]

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Last modified February 12 05:01 EST 2016. Contains 268204 sequences.