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A238298 as a triangular array

256
18361836
134052385413405
9903631590631590699036
730412426835476278784268354730412
536542257285970189073818189073818572859705365422
39447709765288116462199712587142800104621997125

A238298 as a square array

25618361340599036730412536542239447709
183623854315906426835457285970765288116
1340531590676278781890738184621997125
9903642683541890738188714280010
730412572859704621997125
5365422
25618361340599036730412536542239447709
183623854315906426835457285970765288116
1340531590676278781890738184621997125
9903642683541890738188714280010
730412572859704621997125
5365422