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A173075 as a triangular array

1
11
121
1331
14741
15121251
1618251861
172544442571
18337089703381
19421041601601044291
1105214726532126514752101

A173075 as a square array

11111111111
12345678910
137121825334252
1412254470104147
15184489160265
162570160321
1733104265
1842147
1952
110
1
11111111111
12345678910
137121825334252
1412254470104147
15184489160265
162570160321
1733104265
1842147
1952
110
1