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A209427 as a triangular array

1
11
141
127271
125612962561
1312510000010000031251
146656113906256400000011390625466561
18235431801088541643392968756433929687518010885418235431
1167772163778019983369671731157401657648010000000096717311574016377801998336167772161

A209427 as a square array

111111111
142725631254665682354316777216
1271296100000113906251801088541377801998336
1256100000640000006433929687596717311574016
131251139062564339296875576480100000000
146656180108854196717311574016
1823543377801998336
116777216
1
111111111
142725631254665682354316777216
1271296100000113906251801088541377801998336
1256100000640000006433929687596717311574016
131251139062564339296875576480100000000
146656180108854196717311574016
1823543377801998336
116777216
1