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A129276 as a triangular array

1
11
121
1881
142106421
1241155815582411
1144423589536122358914441
188673604991747433174743336049988671
155320553044554794622111482424547946225530445553201

A129276 as a square array

111111111
128422411444886755320
181061558235893604995530445
142155853612174743354794622
1241235891747433111482424
1144436049954794622
188675530445
155320
1
111111111
128422411444886755320
181061558235893604995530445
142155853612174743354794622
1241235891747433111482424
1144436049954794622
188675530445
155320
1