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A057296 as a simple table

na(n)
11
22
33
49
527
669
781
8146
9243
10729
112187
123358
133753
146561
159153
1610658
1714337
1816767
1919683
2021627
2159049
22177147
23193671
24531441
25778034
26845883

[1,2,3,9,27,69,81,146,243,729,2187,3358,3753,6561,
 9153,10658,14337,16767,19683,21627,59049,177147,
 193671,531441,778034,845883]