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A108411 as a simple table

na(n)
01
11
23
33
49
59
627
727
881
981
10243
11243
12729
13729
142187
152187
166561
176561
1819683
1919683
2059049
2159049
22177147
23177147
24531441
25531441
261594323
271594323
284782969
294782969
3014348907
3114348907
3243046721
3343046721
34129140163
35129140163
36387420489
37387420489
381162261467

[1,1,3,3,9,9,27,27,81,81,243,243,729,729,2187,
 2187,6561,6561,19683,19683,59049,59049,177147,
 177147,531441,531441,1594323,1594323,4782969,
 4782969,14348907,14348907,43046721,43046721,
 129140163,129140163,387420489,387420489,
 1162261467]