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A131373 as a triangular array

1
11
111
1221
12521
136631
131071031
141114141141
14161529151641
1517263535261751

A131373 as a square array

1111111111
112233445
125610111617
1267141526
1310142935
13111535
141626
1417
15
1
1111111111
112233445
125610111617
1267141526
1310142935
13111535
141626
1417
15
1