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A075061 as a triangular array

2
34
789
13141516
6162636465
616263646566
421422423424425426427
841842843844845846847848
252125222523252425252526252725282529
252125222523252425252526252725282529

A075061 as a square array

23713616142184125212521
4814626242284225222522
915636342384325232523
16646442484425242524
656542584525252525
6642684625262526
42784725272527
84825282528
25292529
23713616142184125212521
4814626242284225222522
915636342384325232523
16646442484425242524
656542584525252525
6642684625262526
42784725272527
84825282528
25292529