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A072170
as a triangular array
1
1
1
1
1
1
1
2
1
1
1
1
2
1
1
1
3
2
2
1
1
1
2
3
2
2
1
1
1
3
3
4
2
2
1
1
1
1
4
3
4
2
2
1
1
1
4
4
5
4
4
2
2
1
1
1
3
5
4
5
4
4
2
2
1
1
1
5
5
8
5
6
4
4
2
2
1
1
1
2
6
6
8
5
6
4
4
2
2
1
1
1
5
6
9
8
9
6
6
4
4
2
2
1
1
A072170
as a square array
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
3
2
3
1
4
3
5
2
5
1
1
2
2
3
3
4
4
5
5
6
6
1
1
2
2
4
3
5
4
8
6
9
1
1
2
2
4
4
5
5
8
8
1
1
2
2
4
4
6
5
9
1
1
2
2
4
4
6
6
1
1
2
2
4
4
6
1
1
2
2
4
4
1
1
2
2
4
1
1
2
2
1
1
2
1
1
1
A072170
as an upper right triangle
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
3
2
3
1
4
3
5
2
5
1
1
2
2
3
3
4
4
5
5
6
6
1
1
2
2
4
3
5
4
8
6
9
1
1
2
2
4
4
5
5
8
8
1
1
2
2
4
4
6
5
9
1
1
2
2
4
4
6
6
1
1
2
2
4
4
6
1
1
2
2
4
4
1
1
2
2
4
1
1
2
2
1
1
2
1
1
1
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Last modified May 14 17:50 EDT 2024. Contains 372533 sequences. (Running on oeis4.)
