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A138909 as a simple table

na(n)
01
12
26
333
4232
52045
621636
7267043
83766848
959776137
101053986500
1120442543671
12432537117552
139914571191005
14244742376434388
156473030199939675
16182614314495736576
175473825396372806545
18173728330742517310980

[1,2,6,33,232,2045,21636,267043,3766848,59776137,
 1053986500,20442543671,432537117552,9914571191005,
 244742376434388,6473030199939675,
 182614314495736576,5473825396372806545,
 173728330742517310980]