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A281344 as a triangular array

1
22
484
825258
1685688516
3228619319328632
6496954460754496964
128328115391892189215393281128
256111144355586862565868435511114256
512376491233218189197001970018189

A281344 as a square array

1248163264128256512
28258528696932811111437649
425681935441539435512332
8851936071892586818189
162865441892625619700
329691539586819700
643281435518189
12811114
256
1248163264128256512
28258528696932811111437649
425681935441539435512332
8851936071892586818189
162865441892625619700
329691539586819700
643281435518189
12811114
256