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A109128
as a triangular array
1
1
1
1
3
1
1
5
5
1
1
7
11
7
1
1
9
19
19
9
1
1
11
29
39
29
11
1
1
13
41
69
69
41
13
1
1
15
55
111
139
111
55
15
1
1
17
71
167
251
251
167
71
17
1
1
19
89
239
419
503
419
239
89
19
1
1
21
109
329
659
923
923
659
329
109
21
1
A109128
as a square array
1
1
1
1
1
1
1
1
1
1
1
1
1
3
5
7
9
11
13
15
17
19
21
1
5
11
19
29
41
55
71
89
109
1
7
19
39
69
111
167
239
329
1
9
29
69
139
251
419
659
1
11
41
111
251
503
923
1
13
55
167
419
923
1
15
71
239
659
1
17
89
329
1
19
109
1
21
1
A109128
as an upper right triangle
1
1
1
1
1
1
1
1
1
1
1
1
1
3
5
7
9
11
13
15
17
19
21
1
5
11
19
29
41
55
71
89
109
1
7
19
39
69
111
167
239
329
1
9
29
69
139
251
419
659
1
11
41
111
251
503
923
1
13
55
167
419
923
1
15
71
239
659
1
17
89
329
1
19
109
1
21
1
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Last modified May 25 09:23 EDT 2024. Contains 372786 sequences. (Running on oeis4.)
