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A345123 as a triangular array

1
21
431
7631
1211731
201914831
33322617931
54534634201031
8887796343231131
1431421331138353261231
23223122119615610664291331
37637536433427920913276321431

A345123 as a square array

12471220335488143232376
1361119325387142231375
13714264679133221364
138173463113196334
139204383156279
13102353106209
13112664132
13122976
131332
1314
13
1
12471220335488143232376
1361119325387142231375
13714264679133221364
138173463113196334
139204383156279
13102353106209
13112664132
13122976
131332
1314
13
1