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.

A193868 Even central polygonal numbers.

Table of values

n a(n)
1 2
2 4
3 16
4 22
5 46
6 56
7 92
8 106
9 154
10 172
11 232
12 254
13 326
14 352
15 436
16 466
17 562
18 596
19 704
20 742
21 862
22 904
23 1036
24 1082
25 1226
26 1276
27 1432
28 1486
29 1654
30 1712
31 1892
32 1954
33 2146
34 2212
35 2416
36 2486
37 2702
38 2776
39 3004
40 3082
41 3322
42 3404
43 3656
44 3742
45 4006
46 4096
47 4372

List of values

[2, 4, 16, 22, 46, 56, 92, 106, 154, 172, 232, 254, 326, 352, 436, 466, 562, 596, 704, 742, 862, 904, 1036, 1082, 1226, 1276, 1432, 1486, 1654, 1712, 1892, 1954, 2146, 2212, 2416, 2486, 2702, 2776, 3004, 3082, 3322, 3404, 3656, 3742, 4006, 4096, 4372]

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

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