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A168643 as a triangular array

1
11
181
1991
181281
1103030101
112458045121
1146314014063141
1168422428022484161
118108336504504336108181
1201354808401008840480135201

A168643 as a square array

11111111111
1898101214161820
191230456384108135
183080140224336480
11045140280504840
112632245041008
11484336840
116108480
118135
120
1
11111111111
1898101214161820
191230456384108135
183080140224336480
11045140280504840
112632245041008
11484336840
116108480
118135
120
1