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A250218
as a simple table
n
a(n)
1
3
2
5
3
6
4
10
5
22
6
61
7
85
8
86
9
268
10
304
11
606
12
808
13
2706
14
3771
15
5047
16
6288
17
6298
18
7631
19
7643
20
14683
21
27620
[3,5,6,10,22,61,85,86,268,304,606,808,2706,3771, 5047,6288,6298,7631,7643,14683,27620]