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A109338
as
a triangular array
1
1
1
1
1
1
1
2
2
1
1
2
2
2
1
1
2
4
4
2
1
A109338
as
a square array
1
1
1
1
1
1
1
1
2
2
2
1
2
2
4
1
2
4
1
2
1
A109338
as
an upper right triangle
1
1
1
1
1
1
1
1
2
2
2
1
2
2
4
1
2
4
1
2
1
