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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.

A353612 Triangle read by rows: T(n,k) = (n + k) if (n + k) is a prime number, otherwise T(n,k) = 0; n >= 1, k >= 1.

Table of values

n a(n)
1 2
2 3
3 0
4 0
5 5
6 0
7 5
8 0
9 7
10 0
11 0
12 7
13 0
14 0
15 0
16 7
17 0
18 0
19 0
20 11
21 0
22 0
23 0
24 0
25 11
26 0
27 13
28 0
29 0
30 0
31 11
32 0
33 13
34 0
35 0
36 0
37 0
38 11
39 0
40 13
41 0
42 0
43 0
44 17
45 0
46 11
47 0
48 13
49 0
50 0
51 0
52 17
53 0
54 19
55 0
56 0
57 13
58 0
59 0
60 0
61 17
62 0
63 19
64 0
65 0
66 0
67 13
68 0
69 0
70 0
71 17
72 0
73 19
74 0
75 0
76 0
77 23
78 0

List of values

[2, 3, 0, 0, 5, 0, 5, 0, 7, 0, 0, 7, 0, 0, 0, 7, 0, 0, 0, 11, 0, 0, 0, 0, 11, 0, 13, 0, 0, 0, 11, 0, 13, 0, 0, 0, 0, 11, 0, 13, 0, 0, 0, 17, 0, 11, 0, 13, 0, 0, 0, 17, 0, 19, 0, 0, 13, 0, 0, 0, 17, 0, 19, 0, 0, 0, 13, 0, 0, 0, 17, 0, 19, 0, 0, 0, 23, 0]

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