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A100071 as a simple table

na(n)
00
11
22
36
412
530
660
7140
8280
9630
101260
112772
125544
1312012
1424024
1551480
16102960
17218790
18437580
19923780
201847560
213879876
227759752
2316224936
2432449872
2567603900
26135207800
27280816200
28561632400
291163381400
302326762800

[0,1,2,6,12,30,60,140,280,630,1260,2772,5544,
 12012,24024,51480,102960,218790,437580,923780,
 1847560,3879876,7759752,16224936,32449872,
 67603900,135207800,280816200,561632400,1163381400,
 2326762800]