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A273496 as a triangular array

1
02
202
0602
60802
02001002
2003001202
07004201402
70011205601602
0252016807201802
2520420024009002002

A273496 as a square array

102060200700252
20602007002520
20803001120420
201004201680
20120560240
20140720
2016090
20180
2020
20
2
102060200700252
20602007002520
20803001120420
201004201680
20120560240
20140720
2016090
20180
2020
20
2