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A206838 as a triangular array

4
1616
6225662
24138443844241
9365808120551858081936
363687609611091161110862388760963636
141241322049659861818221528052355941387701322049614124
5486519948737632326073197

A206838 as a square array

4166224193636361412454865
1625638445808187609613220496199487376
6238442055181109116159861818232326073197
24158081110862382152805235
936876096594138770
363613220496
14124
4166224193636361412454865
1625638445808187609613220496199487376
6238442055181109116159861818232326073197
24158081110862382152805235
936876096594138770
363613220496
14124