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A201729 as a triangular array

4
1010
209020
3563163135
56356719827356756
83164934994744994741649383
11664018960348956836178960348964018116
15521301314426286647208500014720850001144262866213013155
200621757

A201729 as a square array

41020355683116155200
109063135671649364018213013621757
20631198274994749603489144262866
353567499474568361784720850001
561649396034894720850001
8364018144262866
116213013
155
41020355683116155200
109063135671649364018213013621757
20631198274994749603489144262866
353567499474568361784720850001
561649396034894720850001
8364018144262866
116213013
155