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A209518
as a triangular array
1
1
3
1
4
6
1
5
10
10
1
6
15
20
15
1
7
21
35
35
21
1
8
28
56
70
56
28
1
9
36
84
126
126
84
36
1
10
45
120
210
252
210
120
45
1
11
55
165
330
462
462
330
165
55
A209518
as a square array
1
1
1
1
1
1
1
1
1
1
3
4
5
6
7
8
9
10
11
6
10
15
21
28
36
45
55
10
20
35
56
84
120
165
15
35
70
126
210
330
21
56
126
252
462
28
84
210
462
36
120
330
45
165
55
A209518
as an upper right triangle
1
1
1
1
1
1
1
1
1
1
3
4
5
6
7
8
9
10
11
6
10
15
21
28
36
45
55
10
20
35
56
84
120
165
15
35
70
126
210
330
21
56
126
252
462
28
84
210
462
36
120
330
45
165
55
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Last modified May 20 11:05 EDT 2024. Contains 372712 sequences. (Running on oeis4.)
