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A173884 as a triangular array

1
11
131
121211
11057351051
146516275162754651
11953302715151357530271519531
180015208651115334415115334415520865180011
132385863707958032483935355724288558032483935

A173884 as a square array

111111111
13211054651953800132385
12173516275302715520865186370795
11051627515135751153344158032483935
146530271511533441535572428855
1195352086518032483935
18001
1
111111111
13211054651953800132385
12173516275302715520865186370795
11051627515135751153344158032483935
146530271511533441535572428855
1195352086518032483935
18001
1