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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.

A138139 Triangle read by rows: row n contains n terms and each column lists the prime numbers A000040.

Table of values

n a(n)
1 2
2 2
3 2
4 2
5 3
6 2
7 2
8 3
9 3
10 2
11 2
12 3
13 5
14 3
15 2
16 2
17 3
18 5
19 5
20 3
21 2
22 2
23 3
24 5
25 7
26 5
27 3
28 2
29 2
30 3
31 5
32 7
33 7
34 5
35 3
36 2
37 2
38 3
39 5
40 7
41 11
42 7
43 5
44 3
45 2
46 2
47 3
48 5
49 7
50 11
51 11
52 7
53 5
54 3
55 2
56 2
57 3
58 5
59 7
60 11
61 13
62 11
63 7
64 5
65 3
66 2
67 2
68 3
69 5
70 7
71 11
72 13
73 13
74 11
75 7
76 5
77 3
78 2
79 2
80 3
81 5
82 7
83 11

List of values

[2, 2, 2, 2, 3, 2, 2, 3, 3, 2, 2, 3, 5, 3, 2, 2, 3, 5, 5, 3, 2, 2, 3, 5, 7, 5, 3, 2, 2, 3, 5, 7, 7, 5, 3, 2, 2, 3, 5, 7, 11, 7, 5, 3, 2, 2, 3, 5, 7, 11, 11, 7, 5, 3, 2, 2, 3, 5, 7, 11, 13, 11, 7, 5, 3, 2, 2, 3, 5, 7, 11, 13, 13, 11, 7, 5, 3, 2, 2, 3, 5, 7, 11]

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