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.

A179986 Second 9-gonal (or nonagonal) numbers: a(n) = n*(7*n+5)/2.

Table of values

n a(n)
0 0
1 6
2 19
3 39
4 66
5 100
6 141
7 189
8 244
9 306
10 375
11 451
12 534
13 624
14 721
15 825
16 936
17 1054
18 1179
19 1311
20 1450
21 1596
22 1749
23 1909
24 2076
25 2250
26 2431
27 2619
28 2814
29 3016
30 3225
31 3441
32 3664
33 3894
34 4131
35 4375
36 4626
37 4884
38 5149
39 5421
40 5700
41 5986
42 6279
43 6579
44 6886

List of values

[0, 6, 19, 39, 66, 100, 141, 189, 244, 306, 375, 451, 534, 624, 721, 825, 936, 1054, 1179, 1311, 1450, 1596, 1749, 1909, 2076, 2250, 2431, 2619, 2814, 3016, 3225, 3441, 3664, 3894, 4131, 4375, 4626, 4884, 5149, 5421, 5700, 5986, 6279, 6579, 6886]