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A288537 as a triangular array

1
31
231
2231
82231
482231
3482231
23282231
023422231
28023482231
9028826282231
89028023482231
728902802

A288537 as a square array

1322843202890872
13228432028908
1322823282890
13228432028
132224620
13228232
132284
13228
1322
132
13
1
1322843202890872
13228432028908
1322823282890
13228432028
132224620
13228232
132284
13228
1322
132
13
1