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A291543 as a triangular array

1
22
363
411114
51848185
627109109276
738218632218387
85140516491649405518
9667244192101304192724669
108312771088934801348011088912778310

A291543 as a square array

12345678910
2611182738516683
311481092184057241277
4181096321649419210889
52721816491013034801
638405419234801
75172410889
8661277
983
10
12345678910
2611182738516683
311481092184057241277
4181096321649419210889
52721816491013034801
638405419234801
75172410889
8661277
983
10