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A057884 as a triangular array

1
01
411
0421
104531
0108741
201014131051
0202022201461
3520303435301971
03540505655442581
56355570849185633291
05670951201401461298840101

A057884 as a square array

1040100200350560
114410102020353556
1258142030405570
137132234507095
141020355684120
1514305591140
16194485146
172563129
183288
1940
110
1
1040100200350560
114410102020353556
1258142030405570
137132234507095
141020355684120
1514305591140
16194485146
172563129
183288
1940
110
1