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A138057 as a triangular array

0
0-2
0-33
0-44-4
0-55-55
0-66-66-6
0-77-77-77
0-88-88-88-8
0-99-99-99-99
0-1010-1010-1010-1010-10

A138057 as a square array

0000000000
-2-3-4-5-6-7-8-9-10
345678910
-4-5-6-7-8-9-10
5678910
-6-7-8-9-10
78910
-8-9-10
910
-10
0000000000
-2-3-4-5-6-7-8-9-10
345678910
-4-5-6-7-8-9-10
5678910
-6-7-8-9-10
78910
-8-9-10
910
-10