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.

A004116 a(n) = floor((n^2 + 6n - 3)/4).

Table of values

n a(n)
1 1
2 3
3 6
4 9
5 13
6 17
7 22
8 27
9 33
10 39
11 46
12 53
13 61
14 69
15 78
16 87
17 97
18 107
19 118
20 129
21 141
22 153
23 166
24 179
25 193
26 207
27 222
28 237
29 253
30 269
31 286
32 303
33 321
34 339
35 358
36 377
37 397
38 417
39 438
40 459

List of values

[1, 3, 6, 9, 13, 17, 22, 27, 33, 39, 46, 53, 61, 69, 78, 87, 97, 107, 118, 129, 141, 153, 166, 179, 193, 207, 222, 237, 253, 269, 286, 303, 321, 339, 358, 377, 397, 417, 438, 459]