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A074852 as a simple table

na(n)
19
225
327
481
5125
66561
724389
859049
9161051
10357911
11571787
121442897
134782969
145177717
1514348907
1618191447
1730080231
1873560059
1980062991
20118370771
21127263527
22131872229
23318611987
24344472101
25440711081
26461889917
27590589719

[9,25,27,81,125,6561,24389,59049,161051,357911,
 571787,1442897,4782969,5177717,14348907,18191447,
 30080231,73560059,80062991,118370771,127263527,
 131872229,318611987,344472101,440711081,461889917,
 590589719]