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A258689 as a triangular array

41728
386304386304
351227253929603512272
27566112587139125871391227566112
202381312479373352730627431479373352202381312
143994188840205360645979059398597905939840205360641439941888
9687764256

A258689 as a square array

4172838630435122722756611220238131214399418889687764256
3863045392960587139124793733524020536064
3512272587139127306274315979059398
275661124793733525979059398
2023813124020536064
1439941888
4172838630435122722756611220238131214399418889687764256
3863045392960587139124793733524020536064
3512272587139127306274315979059398
275661124793733525979059398
2023813124020536064
1439941888