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A320129 as a simple table

na(n)
01
11
22
310
455
5412
63736
740518
8505486
97145031
10112844566
111970286922
1237676184205

[1,1,2,10,55,412,3736,40518,505486,7145031,
 112844566,1970286922,37676184205]