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A139040 as a triangular array

1
11
111
1111
11211
112211
1123211
11233211
112343211
1123443211
11234643211
112346643211
1123469643211
11234699643211

A139040 as a square array

11111111111111
1111111111111
112222222222
11233333333
1123444444
112346666
11234699
1123469
112346
11234
1123
112
11
1
11111111111111
1111111111111
112222222222
11233333333
1123444444
112346666
11234699
1123469
112346
11234
1123
112
11
1