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A121952
as a simple table
n
a(n)
1
3
2
22
3
194
4
1620
5
12982
6
98765
7
720519
8
5073805
9
34707100
10
231739037
[3,22,194,1620,12982,98765,720519,5073805, 34707100,231739037]