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A067443 as a simple table

na(n)
12
225
327
4256
5243
6262144
72187
8256
9262144
10282475249
112048
12244140625
132541865828329
14268435456
15205891132094649
162821109907456
17232630513987207
18262144
19274877906944
20278218429446951548637196401
212097152
222384185791015625
2327368747340080916343

[2,25,27,256,243,262144,2187,256,262144,282475249,
 2048,244140625,2541865828329,268435456,
 205891132094649,2821109907456,232630513987207,
 262144,274877906944,278218429446951548637196401,
 2097152,2384185791015625,27368747340080916343]