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A210457 as a triangular array

0
01
242
2436183
324432216484
5120640032008001005
93750112500562501500022501806
1959552228614411430723175205292052922947
46118408527067522635337675295361344560153664109764488

A210457 as a square array

00224324512093750195955246118408
14364326400112500228614452706752
218216320056250114307226353376
348800150003175207529536
41002250529201344560
51805292153664
629410976
7448
8
00224324512093750195955246118408
14364326400112500228614452706752
218216320056250114307226353376
348800150003175207529536
41002250529201344560
51805292153664
629410976
7448
8