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A086646 as a triangular array

1
11
561
6175151
13851708350281
5052162325128101050451
27027653334386685575563642475661
1993609812459516155057152141591551831835005911
193915121452392331772049190323004045721681782495048848891001201

A086646 as a square array

11561138550521270276519936098119391512145
1675170862325333438624595161523923317720
11535012810685575505715214919032300
1281050563644159155404572168
145247518318317824950
1665005488488
1919100
1120
1
11561138550521270276519936098119391512145
1675170862325333438624595161523923317720
11535012810685575505715214919032300
1281050563644159155404572168
145247518318317824950
1665005488488
1919100
1120
1