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A128249 as a triangular array

1
31
1671
127139151
136357111000311
186284083541890356631631
31125045605881792784465470431421961271
6173791739030539663263422646127034735811476066272624592551
1421907031647470410551

A128249 as a square array

13161271363186283112506173791142190703
1713957114083544560588173903053961647470410551
11510001890357927844663263422646
1316631547043112703473581
16342196147606627
1127262459
1255
1
13161271363186283112506173791142190703
1713957114083544560588173903053961647470410551
11510001890357927844663263422646
1316631547043112703473581
16342196147606627
1127262459
1255
1