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A261685 as a triangular array

1
02
024
001212
0086844
002106406206
00088118626441122
00032172812096194567008

A261685 as a square array

10000000
2200000
4128200
12681068832
4440611861728
206264412096
112219456
7008
10000000
2200000
4128200
12681068832
4440611861728
206264412096
112219456
7008