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A356875 as a triangular array

1
25
4109
8201817
1640363421
328072684233
64160144136846637
1283202882721681327441
2566405765443362641488265
51212801152108867252829616413069
10242560230421761344105659232826013873

A356875 as a square array

12481632641282565121024
51020408016032064012802560
918367214428857611522304
17346813627254410882176
2142841683366721344
33661322645281056
3774148296592
4182164328
65130260
69138
73
12481632641282565121024
51020408016032064012802560
918367214428857611522304
17346813627254410882176
2142841683366721344
33661322645281056
3774148296592
4182164328
65130260
69138
73