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A081140 as a simple table

na(n)
00
10
21
330
4600
510000
6150000
72100000
828000000
9360000000
104500000000
1155000000000
12660000000000
137800000000000
1491000000000000
151050000000000000
1612000000000000000
17136000000000000000
181530000000000000000

[0,0,1,30,600,10000,150000,2100000,28000000,
 360000000,4500000000,55000000000,660000000000,
 7800000000000,91000000000000,1050000000000000,
 12000000000000000,136000000000000000,
 1530000000000000000]