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A267990 as a triangular array

1
11
141
15211
1151451891
1211122747719411
1577886425488760736280321
18558446209247323998580871229582094481571
12204051961102544770

A267990 as a square array

111111111
14515215785220
1211451122788658446405196
11897477425488209247321102544770
11941760736399858087
128032122958209
1448157
1
111111111
14515215785220
1211451122788658446405196
11897477425488209247321102544770
11941760736399858087
128032122958209
1448157
1