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A254422 as a triangular array

81
470470
218032792180
962325589267839623
4266922965242314123863942669
1923932128339688035966837952182689192393
8762771987992610989629819933960810682194720251190876277
4010555

A254422 as a square array

8147021809623426691923938762774010555
470327925589229652212833919879926
2180267834231416880359109896298
96232386396683795199339608
426692182689106821947
19239320251190
876277
8147021809623426691923938762774010555
470327925589229652212833919879926
2180267834231416880359109896298
96232386396683795199339608
426692182689106821947
19239320251190
876277