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A055258 as a triangular array

2
814
505698
344350392686
24022408245027444802
168081681416856171501920833614
117650117656117698117992120050134456235298
8235448235508235928238868259448403509411921647086
57648025764808

A055258 as a square array

28503442402168081176508235445764802
14563502408168141176568235505764808
98392245016856117698823592
686274417150117992823886
480219208120050825944
33614134456840350
235298941192
1647086
28503442402168081176508235445764802
14563502408168141176568235505764808
98392245016856117698823592
686274417150117992823886
480219208120050825944
33614134456840350
235298941192
1647086