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A340561 as a triangular array

1
11
121
1531
1121641
129754551
17036138412161
116917283509180532071
140882813150030976810084181
19853967528408950880526172535287220591

A340561 as a square array

1111111111
125122970169408985
1316753611728828139675
1445384350931500284089
15121180530976508805
163208100261725
1784135287
182205
19
1
1111111111
125122970169408985
1316753611728828139675
1445384350931500284089
15121180530976508805
163208100261725
1784135287
182205
19
1