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A059501
as a simple table
n
a(n)
1
2
2
4
3
7
4
24
5
25
6
47
7
57
8
60
9
241
10
391
11
1252
12
1391
13
2340
14
4062
[2,4,7,24,25,47,57,60,241,391,1252,1391,2340,4062]