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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.

A138726 Atomic numbers of the periodic table of the elements, read downwards along 72 columns, up to the 11th period.

Table of values

n a(n)
1 1
2 3
3 11
4 19
5 37
6 55
7 87
8 119
9 169
10 219
11 291
12 4
13 12
14 20
15 38
16 56
17 88
18 120
19 170
20 220
21 292
22 21
23 39
24 57
25 89
26 121
27 171
28 221
29 293
30 58
31 90
32 122
33 172
34 222
35 294
36 123
37 173
38 223
39 295
40 224
41 296
42 225
43 297
44 226
45 298
46 227
47 299
48 228
49 300
50 229
51 301
52 230
53 302
54 231
55 303
56 232
57 304
58 233

List of values

[1, 3, 11, 19, 37, 55, 87, 119, 169, 219, 291, 4, 12, 20, 38, 56, 88, 120, 170, 220, 292, 21, 39, 57, 89, 121, 171, 221, 293, 58, 90, 122, 172, 222, 294, 123, 173, 223, 295, 224, 296, 225, 297, 226, 298, 227, 299, 228, 300, 229, 301, 230, 302, 231, 303, 232, 304, 233]

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

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