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A216620 as a triangular array

1
22
242
3443
26562
446644
28410482
4410661044
38412712483
4686886864
28814420414882
648988889846
2124126

A216620 as a square array

1223242434262
2446484868412
245641048884
36610612614912
244678486
4810128208
244648
488148
3689
488
24
6
1223242434262
2446484868412
245641048884
36610612614912
244678486
4810128208
244648
488148
3689
488
24
6