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A206823 as a triangular array

1
01
202
31806
4048144024
205100060012000120
25567380180007200108000720
244091252441808102940008820010584005040
347712156217640078083857280470400011289601128960040320

A206823 as a square array

102340205255624409347712
101848100073801252441562176
20144600180001808104007808
60120072002940003857280
24010800882004704000
12001058401128960
72001128960
50400
40320
102340205255624409347712
101848100073801252441562176
20144600180001808104007808
60120072002940003857280
24010800882004704000
12001058401128960
72001128960
50400
40320