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A157405 as a triangular array

1
15
11555
1105220935
14253300467521505
130754785084150129030623645
115855415800232347527096304365515415800
232347527096304365515218275751123515639408051934575

A157405 as a square array

11111112323475
5151054253075158552709630
552203300478504158004365515
935467584150232347521827575
2150512903027096301
6236454365515123515
4158006394080
51934575
11111112323475
5151054253075158552709630
552203300478504158004365515
935467584150232347521827575
2150512903027096301
6236454365515123515
4158006394080
51934575