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A209215 as a triangular array

0
11
121
316163
31524881523
1617212602926029172116
24242551958627846096219586272425524
114399281201001373

A209215 as a square array

011331624114
1216152172124255399281
116488260291958627201001373
3152260298460962
317211958627
1624255
24
011331624114
1216152172124255399281
116488260291958627201001373
3152260298460962
317211958627
1624255
24