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A205206 as a triangular array

81
491491
283061382830
14206713557135514206
68508717013164954971701368508
311076704187930972970309729707041879311076
1375313659354485603854151099532113560385415659354481375313
5904417

A205206 as a square array

814912830142066850831107613753135904417
491613871355717013704187965935448
283071355164954930972970560385415
14206717013309729701099532113
685087041879560385415
31107665935448
1375313
814912830142066850831107613753135904417
491613871355717013704187965935448
283071355164954930972970560385415
14206717013309729701099532113
685087041879560385415
31107665935448
1375313