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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 May 22 21:43 EDT 2013. Contains 225583 sequences.