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A299249 as a triangular array

1
11
151
1771
1186181
1311818311
165305530651
113087192192871301
125320265210956522022531
151952620025042504220025265191
110181449674121251353202125167411449

A299249 as a square array

11111111111
1571831651302535191018
1761830872025261449
118185519265220026741
131301921095504221251
16587652504235320
1130202200221251
12535266741
15191449
1
11111111111
1571831651302535191018
1761830872025261449
118185519265220026741
131301921095504221251
16587652504235320
1130202200221251
12535266741
15191449
1