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A003320 as a simple table

na(n)
01
11
21
32
44
59
627
781
8256
91024
104096
1116384
1278125
13390625
141953125
1510077696
1660466176
17362797056
182176782336
1913841287201
2096889010407
21678223072849
224747561509943
2335184372088832
24281474976710656
252251799813685248

[1,1,1,2,4,9,27,81,256,1024,4096,16384,78125,
 390625,1953125,10077696,60466176,362797056,
 2176782336,13841287201,96889010407,678223072849,
 4747561509943,35184372088832,281474976710656,
 2251799813685248]