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A229212 as a triangular array

2
39
42564
549343625
681100065617776
7121219728561161051117649
8169409683521104857648268092097152
9225685919448140841014704588117085937543046721
10289

A229212 as a square array

2345678910
9254981121169225289
643431000219740966859
62565612856183521194481
777616105110485764084101
117649482680947045881
2097152170859375
43046721
2345678910
9254981121169225289
643431000219740966859
62565612856183521194481
777616105110485764084101
117649482680947045881
2097152170859375
43046721