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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.

A078724 a(n) = prime(n*(n+1)/2+3).

Table of values

n a(n)
0 5
1 7
2 13
3 23
4 41
5 61
6 89
7 127
8 167
9 223
10 271
11 347
12 419
13 491
14 593
15 677
16 797
17 911
18 1033
19 1171
20 1303
21 1481
22 1619
23 1801
24 1999
25 2203
26 2383
27 2621
28 2803
29 3061
30 3323
31 3559
32 3823
33 4093
34 4391
35 4679
36 4999
37 5333
38 5653
39 5987
40 6323
41 6701
42 7043
43 7489
44 7867
45 8273
46 8699
47 9127

List of values

[5, 7, 13, 23, 41, 61, 89, 127, 167, 223, 271, 347, 419, 491, 593, 677, 797, 911, 1033, 1171, 1303, 1481, 1619, 1801, 1999, 2203, 2383, 2621, 2803, 3061, 3323, 3559, 3823, 4093, 4391, 4679, 4999, 5333, 5653, 5987, 6323, 6701, 7043, 7489, 7867, 8273, 8699, 9127]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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