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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.

A047844 Patrick De Geest's "Generations" array read by antidiagonals: a(n,1) = n-th prime, a(1,k+1) = a(2,k), a(n,k+1) = a(n-1,k) + a(n+1,k).

Table of values

n a(n)
1 2
2 3
3 3
4 5
5 7
6 7
7 7
8 10
9 13
10 13
11 11
12 16
13 23
14 30
15 30
16 13
17 20
18 30
19 43
20 56
21 56
22 17
23 28
24 44
25 67
26 97
27 127
28 127
29 19
30 32
31 52
32 82
33 125
34 181
35 237
36 237
37 23
38 40
39 68
40 112
41 179
42 276
43 403
44 530
45 530
46 29
47 48
48 80
49 132
50 214
51 339
52 520
53 757
54 994
55 994
56 31
57 54
58 94
59 162
60 274

List of values

[2, 3, 3, 5, 7, 7, 7, 10, 13, 13, 11, 16, 23, 30, 30, 13, 20, 30, 43, 56, 56, 17, 28, 44, 67, 97, 127, 127, 19, 32, 52, 82, 125, 181, 237, 237, 23, 40, 68, 112, 179, 276, 403, 530, 530, 29, 48, 80, 132, 214, 339, 520, 757, 994, 994, 31, 54, 94, 162, 274]

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