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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A333851 Irregular triangle read by rows: T(n, k) = gcd(A333850(n, k), 2*A333855(n)), for n >= 1, and k = 1,2, ..., A135303(A333855(n)).

Table of values

n a(n)
1 2
2 2
3 1
4 1
5 1
6 1
7 1
8 2
9 2
10 1
11 1
12 1
13 2
14 2
15 3
16 3
17 2
18 2
19 2
20 2
21 2
22 10
23 2
24 1
25 1
26 1
27 1
28 2
29 2
30 2
31 2
32 1
33 1
34 1
35 1
36 2
37 2
38 2
39 2
40 2
41 2
42 2
43 2
44 1
45 1
46 6
47 6
48 2
49 2
50 2
51 2
52 2
53 2
54 2
55 2
56 2
57 2
58 2
59 2
60 2
61 2
62 1
63 1
64 1
65 1
66 1
67 1
68 1
69 1
70 1
71 1
72 1
73 1
74 1
75 1
76 1
77 2
78 14
79 38
80 2
81 2

List of values

[2, 2, 1, 1, 1, 1, 1, 2, 2, 1, 1, 1, 2, 2, 3, 3, 2, 2, 2, 2, 2, 10, 2, 1, 1, 1, 1, 2, 2, 2, 2, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 14, 38, 2, 2]

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