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A171698 as a triangular array

1
11
222
6644
20201488
707050301616
252252182112623232
9249246724202381266464

A171698 as a square array

11262070252924
1262070252924
241450182672
4830112420
81662238
1632126
3264
64
11262070252924
1262070252924
241450182672
4830112420
81662238
1632126
3264
64