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A115216 as a triangular array

1
22
454
810108
1620212016
324042424032
64808485848064
128160168170170168160128
256320336340341340336320256
512640672680682682680672640512
10241280134413601364

A115216 as a square array

12481632641282565121024
25102040801603206401280
4102142841683366721344
82042851703406801360
1640841703416821364
3280168340682
64160336680
128320672
256640
512

A115216 as an upper right triangle

12481632641282565121024
25102040801603206401280
4102142841683366721344
82042851703406801360
1640841703416821364
3280168340682
64160336680
128320672
256640
512

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Last modified June 12 14:45 EDT 2021. Contains 344957 sequences. (Running on oeis4.)