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A232431 as a triangular array

4
1616
6419264
24016321632240
988145923370814592988
39641329806506966506961329803964
158441222708144653843112757614465384122270815844
638081121582031320180415951454281595145428

A232431 as a square array

4166424098839641584463808
16192163214592132980122270811215820
6416323370865069614465384313201804
24014592650696311275761595145428
988132980144653841595145428
39641222708
15844
4166424098839641584463808
16192163214592132980122270811215820
6416323370865069614465384313201804
24014592650696311275761595145428
988132980144653841595145428
39641222708
15844