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A289869 as a triangular array

0
21
633
8754
189969
201911101110
24212112151212
2625232217161413
542727242718181527
56552928292820192928
6057573033303021333030
626159

A289869 as a square array

02681820242654566062
137919212527555761
35911212327295759
46101222242830
9111517272933
101216182830
1214182030
13151921
272933
2830
30
02681820242654566062
137919212527555761
35911212327295759
46101222242830
9111517272933
101216182830
1214182030
13151921
272933
2830
30