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A253258 as a triangular array

1
26
31260
41572120
51884180360
72090240420840
82412625272010803360
9281403361008126036002520
103014437812001440378055445040
11351684321320168039606300756010080
1336198480151218004200672092401260015120

A253258 as a square array

12345789101113
6121518202428303536
60728490126140144168198
120180240252336378432480
3604207201008120013201512
84010801260144016801800
33603600378039604200
2520554463006720
504075609240
1008012600
15120
12345789101113
6121518202428303536
60728490126140144168198
120180240252336378432480
3604207201008120013201512
84010801260144016801800
33603600378039604200
2520554463006720
504075609240
1008012600
15120