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A106041
as a simple table
n
a(n)
1
1
2
10
3
50
4
4946
5
397706
6
1243141
7
3445873
8
9210805
9
805715770
10
1542576890
[1,10,50,4946,397706,1243141,3445873,9210805, 805715770,1542576890]