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A206900 as a triangular array

4
1616
6225662
24138443844241
9365808121154858081936
363687609611745962117459628760963636
141241322049664980484624088113586498048461322049614124
5486519948737635974254384

A206900 as a square array

4166224193636361412454865
1625638445808187609613220496199487376
6238442115481174596264980484635974254384
24158081117459622408811358
936876096649804846
363613220496
14124
4166224193636361412454865
1625638445808187609613220496199487376
6238442115481174596264980484635974254384
24158081117459622408811358
936876096649804846
363613220496
14124