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A286146 as a triangular array

1
25
41613
7126725
114610619141
1623318043661
229221137959686285
2938277597813021541113
371545863199119319542557145
46574362129646724168224006181
56232529947148621462927382948525996221
6780941091771142348735570618328647

A286146 as a square array

12471116222937465667
51612462392381545723280
1367106312112775843652994
251918037959631212947109
414365967819919614861771
618623021934672146142
8515411954241629273487
11325578223829355
14540064852706
18159961832
2218647
12471116222937465667
51612462392381545723280
1367106312112775843652994
251918037959631212947109
414365967819919614861771
618623021934672146142
8515411954241629273487
11325578223829355
14540064852706
18159961832
2218647