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A088729 as a triangular array

1
31
1391
7579181
541765265301
468383113870665451
4729310098959101136501400631
5458351362439960498278901384302618841
70872612024644516700545584451010124319261044941081

A088729 as a square array

1313755414683472935458357087261
19797658311100989136243920246445
11826538705910196049816700545
130665136502789015844510
1451400384301012431
163261892610
1844494
1108
1
1313755414683472935458357087261
19797658311100989136243920246445
11826538705910196049816700545
130665136502789015844510
1451400384301012431
163261892610
1844494
1108
1