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A205548 as a triangular array

1
33
616
104410
151011015
2120552021
2835151153528
36563566355636
45847021121708445
5512012656775612612055
661652101262812812621016566
78220

A205548 as a square array

136101521283645556678
3141020355684120165220
6415153570126210
10105162156126
15201561728
2135352171
2856705628
3684126126
45120210
55165
66
136101521283645556678
3141020355684120165220
6415153570126210
10105162156126
15201561728
2135352171
2856705628
3684126126
45120210
55165
66