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A143168 as a simple table

na(n)
01
118
2345
37650
4196245
55755050
6190482705
77034400450
8286988226525
912826061498250
10623403611055225
1132747785180560450
121849179329801929125
13111713055889014830250
147190273917194645902625
15491244630824362410245250
1635508203161436371983742125

[1,18,345,7650,196245,5755050,190482705,
 7034400450,286988226525,12826061498250,
 623403611055225,32747785180560450,
 1849179329801929125,111713055889014830250,
 7190273917194645902625,491244630824362410245250,
 35508203161436371983742125]