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A186568 as a triangular array

19683
721721
29171732917
65944014016594
1212214111399141112122
20056261734213421261720056
293033379480789834807337929303
351984033560511557115575605403335198
536114795651112895

A186568 as a square array

19683721291765941212220056293033519853611
72117340114112617337940334795
291740113993421480756056511
65941411342189831155712895
121222617480711557
2005633795605
293034033
35198
19683721291765941212220056293033519853611
72117340114112617337940334795
291740113993421480756056511
65941411342189831155712895
121222617480711557
2005633795605
293034033
35198