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A347972 as a triangular array

1
11
141
1991
11956191
133289289331
155135848361358551
185577180605806055771851
112822594127187055256861271870225941281
1183818021847846037230296237230296218478460818021831

A347972 as a square array

1111111111
14919335585128183
1956289135857712259481802
119289483680605127187018478460
1331358806055525686372302962
15557711271870372302962
1852259418478460
112881802
1183
1
1111111111
14919335585128183
1956289135857712259481802
119289483680605127187018478460
1331358806055525686372302962
15557711271870372302962
1852259418478460
112881802
1183
1