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A048212
as a triangular array
2
1
3
4
5
7
6
10
11
13
8
14
18
19
21
9
17
23
27
28
30
12
21
29
35
39
40
42
15
27
36
44
50
54
55
57
16
31
43
52
60
66
70
71
73
20
36
51
63
72
80
86
90
91
93
22
42
58
73
85
94
102
108
A048212
as a square array
2
1
4
6
8
9
12
15
16
20
22
3
5
10
14
17
21
27
31
36
42
7
11
18
23
29
36
43
51
58
13
19
27
35
44
52
63
73
21
28
39
50
60
72
85
30
40
54
66
80
94
42
55
70
86
102
57
71
90
108
73
91
93
A048212
as an upper right triangle
2
1
4
6
8
9
12
15
16
20
22
3
5
10
14
17
21
27
31
36
42
7
11
18
23
29
36
43
51
58
13
19
27
35
44
52
63
73
21
28
39
50
60
72
85
30
40
54
66
80
94
42
55
70
86
102
57
71
90
108
73
91
93
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Last modified June 9 23:13 EDT 2024. Contains 373251 sequences. (Running on oeis4.)
