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A066723号作为一个简单的表

n个a(n)
01
11
22
5
413
536
6109
7340
81116
93744
1012981
1145722
12165247
13603242
142242932
158422438
1632040585
17122800802
18475937009

[1,1,2,5,13,36,109,340,1116,3744,12981,45722,165247,603242,2242932,8422438,32040585,122800802,475937009]