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.

A001106 9-gonal (or enneagonal or nonagonal) numbers: a(n) = n*(7*n-5)/2.

Table of values

n a(n)
0 0
1 1
2 9
3 24
4 46
5 75
6 111
7 154
8 204
9 261
10 325
11 396
12 474
13 559
14 651
15 750
16 856
17 969
18 1089
19 1216
20 1350
21 1491
22 1639
23 1794
24 1956
25 2125
26 2301
27 2484
28 2674
29 2871
30 3075
31 3286
32 3504
33 3729
34 3961
35 4200
36 4446
37 4699
38 4959
39 5226
40 5500
41 5781
42 6069
43 6364

List of values

[0, 1, 9, 24, 46, 75, 111, 154, 204, 261, 325, 396, 474, 559, 651, 750, 856, 969, 1089, 1216, 1350, 1491, 1639, 1794, 1956, 2125, 2301, 2484, 2674, 2871, 3075, 3286, 3504, 3729, 3961, 4200, 4446, 4699, 4959, 5226, 5500, 5781, 6069, 6364]