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.

A018227 Magic numbers: atoms with full shells containing any of these numbers of electrons are considered electronically stable.

Table of values

n a(n)
1 2
2 10
3 18
4 36
5 54
6 86
7 118
8 168
9 218
10 290
11 362
12 460
13 558
14 686
15 814
16 976
17 1138
18 1338
19 1538
20 1780
21 2022
22 2310
23 2598
24 2936
25 3274
26 3666
27 4058
28 4508
29 4958
30 5470
31 5982
32 6560
33 7138
34 7786
35 8434
36 9156
37 9878
38 10678
39 11478
40 12360
41 13242
42 14210
43 15178

List of values

[2, 10, 18, 36, 54, 86, 118, 168, 218, 290, 362, 460, 558, 686, 814, 976, 1138, 1338, 1538, 1780, 2022, 2310, 2598, 2936, 3274, 3666, 4058, 4508, 4958, 5470, 5982, 6560, 7138, 7786, 8434, 9156, 9878, 10678, 11478, 12360, 13242, 14210, 15178]

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

Content is available under The OEIS End-User License Agreement.