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Seal triangles 2/left
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Template:Seal triangles 2
triangle
A022166
and its row sums
A006116
k
n
0
1
2
3
4
5
6
7
sums
0
1
1
1
1
1
2
2
1
3
1
5
3
1
7
7
1
16
4
1
15
35
15
1
67
5
1
31
155
155
31
1
374
6
1
63
651
1395
651
63
1
2825
7
1
127
2667
11811
11811
2667
127
1
29212