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A139624
as
a triangular array
1
1
1
3
2
1
6
7
3
1
11
A139624
as
a square array
1
1
3
6
11
1
2
7
1
3
1
A139624
as
an upper right triangle
1
1
3
6
11
1
2
7
1
3
1
