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A063804
as
a triangular array
1
1
2
1
3
4
1
4
12
17
1
5
25
206
143
1
6
50
6029
181472
4890
1
7
91
508321
A063804
as
a square array
1
1
1
1
1
1
1
2
3
4
5
6
7
4
12
25
50
91
17
206
6029
508321
143
181472
4890
A063804
as
an upper right triangle
1
1
1
1
1
1
1
2
3
4
5
6
7
4
12
25
50
91
17
206
6029
508321
143
181472
4890