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A297897 as a triangular array

1
315
1060260
3523110504375
12688241401764072324
462336616170700702910601183644
171612870629202762761159704475675219253520
643549335244530108517545945901898127077297220311949495
24310189618950300

A297897 as a square array

1310351264621716643524310
156023188233661287049335189618
260105041401617062920244530950300
437517640700702762761085175
7232429106011597044594590
1183644475675218981270
1925352077297220
311949495
1310351264621716643524310
156023188233661287049335189618
260105041401617062920244530950300
437517640700702762761085175
7232429106011597044594590
1183644475675218981270
1925352077297220
311949495