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A210202 as a triangular array

1
23
476
7171712
1235504024
20701201359248
3313427536534620896
542515939301033856464192
88461123622062874278420641024384
143835250050157389835572404880

A210202 as a square array

12471220335488143
37173570134251461835
6175012027559312362500
124013536593022065015
2492346103328747389
4820885627848355
9646420647240
19210244880
384
12471220335488143
37173570134251461835
6175012027559312362500
124013536593022065015
2492346103328747389
4820885627848355
9646420647240
19210244880
384