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A171509 as a triangular array

1
31
1061
332991
11012657121
36651830694151
122020521494600140181
40657925684933891035195211
1355030030300251762866351638259241

A171509 as a square array

1310331103661220406513550
16291265182052792530030
19573061494684930025
11294600338917628
11514010356635
1181951638
121259
124
1
1310331103661220406513550
16291265182052792530030
19573061494684930025
11294600338917628
11514010356635
1181951638
121259
124
1