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A173742 as a triangular array

1
11
181
1991
11012101
1111616111
112212621121
11327414127131
1143462766234141
11542901321329042151
1165112621625821612651161
1176117133646846833617161171

A173742 as a square array

111111111111
1891011121314151617
191216212734425161
1101626416290126171
111214176132216336
1122762132258468
1133490216468
11442126336
11551171
11661
117
1
111111111111
1891011121314151617
191216212734425161
1101626416290126171
111214176132216336
1122762132258468
1133490216468
11442126336
11551171
11661
117
1