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A172346 as a triangular array

1
11
181
165651
152842905281
1428928307428307442891
1348401867859515172766418678595348401
12830091232504195813263152678132631526712325041952830091
1229891281326598276

A172346 as a square array

111111111
18655284289348402830092298912
165429028307418678595123250419581326598276
152828307415172766481326315267
142891867859581326315267
1348401232504195
1283009
1
111111111
18655284289348402830092298912
165429028307418678595123250419581326598276
152828307415172766481326315267
142891867859581326315267
1348401232504195
1283009
1