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A016256 as a simple table

na(n)
01
118
2235
32700
428981
5298278
62984095
729253600
8282456361
92695498938
1025486623955
11239196683700
122231306698141
1320710052641998
14191416812647815
151762962024789000
1616188343910770321
17148268580698287458
181355005110295423675
1912359749064745505500

[1,18,235,2700,28981,298278,2984095,29253600,
 282456361,2695498938,25486623955,239196683700,
 2231306698141,20710052641998,191416812647815,
 1762962024789000,16188343910770321,
 148268580698287458,1355005110295423675,
 12359749064745505500]