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A356049 as a triangular array

1
55
155715
4148948941
1134125126754125113
3133511732168932168935117313
8672996818180343243181658180343299681867
240125576052081446011840058693184005869320814460125576052401

A356049 as a square array

1515411133138672401
5574894125351172996812557605
15489126753216898180343208144601
414125321689243181651840058693
1133511781803431840058693
313299681208144601
8672557605
2401
1515411133138672401
5574894125351172996812557605
15489126753216898180343208144601
414125321689243181651840058693
1133511781803431840058693
313299681208144601
8672557605
2401