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A208408 as a triangular array

1
22
5155
1518218715
51269810682279551
1874191465845066747843947187
7156584504088336016342291442012698700075715
279510370330254044615640039156736405956796342646531062111889072795

A208408 as a square array

12515511877152795
21518226984191465845010370330
518710682658450408833602540446156
15279566747816342291440039156736
51439474201269840595679634
1877000752646531062
71511188907
2795
12515511877152795
21518226984191465845010370330
518710682658450408833602540446156
15279566747816342291440039156736
51439474201269840595679634
1877000752646531062
71511188907
2795