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A038215 as a triangular array

1
29
43681
8108486729
16288194458326561
327206480291606561059049
64172819440116640393660708588531441
1284032544324082401837080496011674401744782969
2569216145152

A038215 as a square array

1248163264128256
936108288720172840329216
81486194464801944054432145152
729583229160116640408240
6561656103936601837080
590497085884960116
5314417440174
4782969
1248163264128256
936108288720172840329216
81486194464801944054432145152
729583229160116640408240
6561656103936601837080
590497085884960116
5314417440174
4782969