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A130302
as
a triangular array
1
3
1
6
2
1
10
3
2
1
15
4
3
2
1
21
5
4
3
2
1
28
6
5
4
3
2
1
36
7
6
5
4
3
2
1
A130302
as
a square array
1
3
6
10
15
21
28
36
1
2
3
4
5
6
7
1
2
3
4
5
6
1
2
3
4
5
1
2
3
4
1
2
3
1
2
1
A130302
as
an upper right triangle
1
3
6
10
15
21
28
36
1
2
3
4
5
6
7
1
2
3
4
5
6
1
2
3
4
5
1
2
3
4
1
2
3
1
2
1