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A303555 as a triangular array

2
46
81230
162460210
32481204202310
6496240840462030030
1281924801680924060060510510
25638496033601848012012010210209699690
5127681920672036960240240204204019399380223092870
10241536384013440739204804804084080387987604461857406469693230

A303555 as a square array

2481632641282565121024
6122448961923847681536
306012024048096019203840
21042084016803360672013440
231046209240184803696073920
3003060060120120240240480480
510510102102020420404084080
96996901939938038798760
223092870446185740
6469693230
2481632641282565121024
6122448961923847681536
306012024048096019203840
21042084016803360672013440
231046209240184803696073920
3003060060120120240240480480
510510102102020420404084080
96996901939938038798760
223092870446185740
6469693230