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A260781 as a triangular array

1
11
58-1
2757-153
5021292-528212-38
23757135-39902410-865135

A260781 as a square array

115275022375
185712927135
-1-15-528-3990
32122410
-38-865
135
115275022375
185712927135
-1-15-528-3990
32122410
-38-865
135