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.

A069178 Centered 21-gonal numbers.

Table of values

n a(n)
1 1
2 22
3 64
4 127
5 211
6 316
7 442
8 589
9 757
10 946
11 1156
12 1387
13 1639
14 1912
15 2206
16 2521
17 2857
18 3214
19 3592
20 3991
21 4411
22 4852
23 5314
24 5797
25 6301
26 6826
27 7372
28 7939
29 8527
30 9136
31 9766
32 10417
33 11089
34 11782
35 12496
36 13231
37 13987
38 14764
39 15562
40 16381
41 17221
42 18082
43 18964

List of values

[1, 22, 64, 127, 211, 316, 442, 589, 757, 946, 1156, 1387, 1639, 1912, 2206, 2521, 2857, 3214, 3592, 3991, 4411, 4852, 5314, 5797, 6301, 6826, 7372, 7939, 8527, 9136, 9766, 10417, 11089, 11782, 12496, 13231, 13987, 14764, 15562, 16381, 17221, 18082, 18964]