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A204166 as a triangular array

1
22
222
3333
33333
444444
4444444
55555555
555555555
6666666666
66666666666
777777777777
7777777777777
88888888

A204166 as a square array

12233445566778
2233445566778
233445566778
33445566778
3445566778
445566778
45566778
5566778
56677
6677
677
77
7
12233445566778
2233445566778
233445566778
33445566778
3445566778
445566778
45566778
5566778
56677
6677
677
77
7