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A207050 as a triangular array

81
150150
441270441
14165525521416
4371118275011824371
13386224412721272224413386
415894722209422442094472241589
128700958234083408340834089582128700
397335189305850483649444836

A207050 as a square array

81150441141643711338641589128700397335
150270552118222444722958218930
4415527501272209434085850
141611821272224434084836
43712244209434084944
13386472234084836
415899582
128700
81150441141643711338641589128700397335
150270552118222444722958218930
4415527501272209434085850
141611821272224434084836
43712244209434084944
13386472234084836
415899582
128700