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A060040
as
a triangular array
1
1
2
1
2
3
1
2
3
5
1
2
3
4
9
1
2
3
4
6
A060040
as
a square array
1
1
1
1
1
1
2
2
2
2
2
3
3
3
3
5
4
4
9
6
A060040
as
an upper right triangle
1
1
1
1
1
1
2
2
2
2
2
3
3
3
3
5
4
4
9
6