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A026920
as a triangular array
1
0
1
1
0
1
0
1
0
1
1
1
1
0
1
0
2
1
1
0
1
1
1
3
1
1
0
1
0
2
2
3
1
1
0
1
1
2
4
3
3
1
1
0
1
0
3
3
5
3
3
1
1
0
1
1
2
6
5
6
3
3
1
1
0
1
0
3
5
8
6
6
3
3
1
1
0
1
1
3
8
8
10
7
6
3
3
1
1
0
1
0
4
7
12
10
11
7
6
3
3
1
1
0
1
A026920
as a square array
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
2
1
2
2
3
2
3
3
4
1
0
1
1
3
2
4
3
6
5
8
7
1
0
1
1
3
3
5
5
8
8
12
1
0
1
1
3
3
6
6
10
10
1
0
1
1
3
3
6
7
11
1
0
1
1
3
3
6
7
1
0
1
1
3
3
6
1
0
1
1
3
3
1
0
1
1
3
1
0
1
1
1
0
1
1
0
1
A026920
as an upper right triangle
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
2
1
2
2
3
2
3
3
4
1
0
1
1
3
2
4
3
6
5
8
7
1
0
1
1
3
3
5
5
8
8
12
1
0
1
1
3
3
6
6
10
10
1
0
1
1
3
3
6
7
11
1
0
1
1
3
3
6
7
1
0
1
1
3
3
6
1
0
1
1
3
3
1
0
1
1
3
1
0
1
1
1
0
1
1
0
1
Lookup
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Last modified June 11 22:03 EDT 2024. Contains 373317 sequences. (Running on oeis4.)
