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A099157 as a simple table

na(n)
00
11
212
3128
41344
514080
6147456
71544192
816171008
9169345024
101773404160
1118571329536
12194481487872
132036636581888
1421327935176704
15223349036810240
162338941478895616
1724493713157783552
18256501494231072768

[0,1,12,128,1344,14080,147456,1544192,16171008,
 169345024,1773404160,18571329536,194481487872,
 2036636581888,21327935176704,223349036810240,
 2338941478895616,24493713157783552,
 256501494231072768]