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A273914 as a triangular array

1
11
121
1331
14641
15101051
1615201561
172135352071
18285670532681
193684126121763391
1104512021024519210641101
1115516533045343029014350111

A273914 as a square array

111111111111
1234567891011
13610152128364555
141020355684120165
15153570126210330
162053121245453
172676192430
1833106290
1941143
11050
111
1
111111111111
1234567891011
13610152128364555
141020355684120165
15153570126210330
162053121245453
172676192430
1833106290
1941143
11050
111
1