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A188509
as
a triangular array
1
1
3
1
5
7
1
9
13
15
1
17
25
29
31
1
33
49
57
61
63
1
65
A188509
as
a square array
1
1
1
1
1
1
1
3
5
9
17
33
65
7
13
25
49
15
29
57
31
61
63
A188509
as
an upper right triangle
1
1
1
1
1
1
1
3
5
9
17
33
65
7
13
25
49
15
29
57
31
61
63