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A232391 as a triangular array

12
1818
786478
190192192190
6708401192840670
195432464646464632461954
622412818248482875224848128186224
19178512401202641783521783521202645124019178
601142031045891721186624

A232391 as a square array

121878190670195462241917860114
186419284032461281851240203104
781921192464624848120264589172
1908404646287521783521186624
670324624848178352
195412818120264
622451240
19178
121878190670195462241917860114
186419284032461281851240203104
781921192464624848120264589172
1908404646287521783521186624
670324624848178352
195412818120264
622451240
19178