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A303215 as a triangular array

3
84
695
2015107
1827161411
124428211913
30404532252217
5442505752332623
247856646355353129
368010266756874373443
1381008812870926977384147

A303215 as a square array

38620181230542436138
4915274440427880100
510162845505610288
7142132576466128
11192552637570
132233556892
1726357469
23313777
293438
4341
47
38620181230542436138
4915274440427880100
510162845505610288
7142132576466128
11192552637570
132233556892
1726357469
23313777
293438
4341
47