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A050300 as a triangular array

1
61
2161
712761
196922761
532288982761
1301799309982761
31012100891315982761
695651452373912315982761
152171212159802465918315982761
3195127247142926253

A050300 as a square array

1621711965321301310169561521731951
162792288799210051451212127247
1627983098912373598014292
16279831591224656253
162798315918
162798315
162798
1627
16
1
1621711965321301310169561521731951
162792288799210051451212127247
1627983098912373598014292
16279831591224656253
162798315918
162798315
162798
1627
16
1