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A168646 as a triangular array

1
11
1121
115151
11624161
1153030151
112304030121
1146310510563141
1168422428022484161
118108336630630336108181
120135480105015121050480135201

A168646 as a square array

11111111111
1121516151214161820
1152430306384108135
1163040105224336480
115301052806301050
112632246301512
114843361050
116108480
118135
120
1
11111111111
1121516151214161820
1152430306384108135
1163040105224336480
115301052806301050
112632246301512
114843361050
116108480
118135
120
1