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A245558 as a triangular array

1
11
111
1221
12321
135531
1378731
1491414941
14122025201241
1515304242301551
151840667566401851
1622559913213299552261

A245558 as a square array

111111111111
11223344556
12357912151822
12581420304055
1371425426699
139204275132
14123066132
14154099
151855
1522
16
1
111111111111
11223344556
12357912151822
12581420304055
1371425426699
139204275132
14123066132
14154099
151855
1522
16
1