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A131303 as a triangular array

1
31
551
7331
915531
11137531
131111953115
797953117
91311111153119
431513777531

A131303 as a square array

1357911137943
15315131191315
13571171113
13599117
1355117
13357
115135
1713
191
1357911137943
15315131191315
13571171113
13599117
1355117
13357
115135
1713
191