cp's OEIS Frontend

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.

A078721 a(n) = prime(n*(n+1)/2 + 1).

Table of values

n a(n)
0 2
1 3
2 7
3 17
4 31
5 53
6 79
7 109
8 157
9 199
10 263
11 331
12 401
13 479
14 577
15 661
16 773
17 887
18 1021
19 1153
20 1297
21 1459
22 1609
23 1787
24 1993
25 2161
26 2377
27 2609
28 2797
29 3041
30 3313
31 3547
32 3803
33 4079
34 4363
35 4663
36 4987
37 5309
38 5647
39 5953
40 6311
41 6689
42 7027
43 7481
44 7841
45 8263
46 8689

List of values

[2, 3, 7, 17, 31, 53, 79, 109, 157, 199, 263, 331, 401, 479, 577, 661, 773, 887, 1021, 1153, 1297, 1459, 1609, 1787, 1993, 2161, 2377, 2609, 2797, 3041, 3313, 3547, 3803, 4079, 4363, 4663, 4987, 5309, 5647, 5953, 6311, 6689, 7027, 7481, 7841, 8263, 8689]

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

Content is available under The OEIS End-User License Agreement.