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A286012 as a triangular array

1
11
122
1363
1412175
152048508
163010219714713
174218553281543421
1856303116528043391128234

A286012 as a square array

111111111
12345678
261220304256
31748102185303
5501975321165
81478152804
134343391
211282
34
111111111
12345678
261220304256
31748102185303
5501975321165
81478152804
134343391
211282
34