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A121524 as a triangular array

1
11
131
1651
191581
1123430111
115628555141
1189920018589171
121145402510365132201
12420071812201160650184231
12726411752585315524001067245261
130337

A121524 as a square array

111111111111
136912151821242730
1515346299145200264337
1830852004027181175
1115518551012202585
1148936511603155
1171326502400
1201841067
123245
126
1
111111111111
136912151821242730
1515346299145200264337
1830852004027181175
1115518551012202585
1148936511603155
1171326502400
1201841067
123245
126
1