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A122507 as a triangular array

1
13
137
13711
1371119
137111923
13711192335
1371119233543
137111923354355
13711192335435563
1371119233543556383

A122507 as a square array

11111111111
3333333333
777777777
1111111111111111
19191919191919
232323232323
3535353535
43434343
555555
6363
83
11111111111
3333333333
777777777
1111111111111111
19191919191919
232323232323
3535353535
43434343
555555
6363
83