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A131131 as a triangular array

1
11
451
41291
41624131
4204040171
424608060211
4288414014084251
432112224280224112291

A131131 as a square array

114444444
15121620242832
1924406084112
1134080140224
11760140280
12184224
125112
129
1
114444444
15121620242832
1924406084112
1134080140224
11760140280
12184224
125112
129
1