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A277056
as a simple table
n
a(n)
2
2
3
5
4
7
5
34
6
195
7
727
8
3724
9
9124
10
92115
11
338161
12
2780514
13
6871290
14
99000993
[2,5,7,34,195,727,3724,9124,92115,338161,2780514, 6871290,99000993]