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A140682 as a triangular array

-1
00
1-11
2-2-22
3-3-4-33
4-4-9-9-44
5-5-13-17-13-55
6-6-20-34-34-20-66
7-7-26-55-66-55-26-77
8-8-35-81-125-125-81-35-88
9-9-43-119-208-247-208-119-43-99

A140682 as a square array

-10123456789
0-1-2-3-4-5-6-7-8-9
1-2-4-9-13-20-26-35-43
2-3-9-17-34-55-81-119
3-4-13-34-66-125-208
4-5-20-55-125-247
5-6-26-81-208
6-7-35-119
7-8-43
8-9
9
-10123456789
0-1-2-3-4-5-6-7-8-9
1-2-4-9-13-20-26-35-43
2-3-9-17-34-55-81-119
3-4-13-34-66-125-208
4-5-20-55-125-247
5-6-26-81-208
6-7-35-119
7-8-43
8-9
9