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.

A011956 Number of close-packings with layer-number 3n and space group R3m.

Table of values

n a(n)
7 1
8 2
9 4
10 10
11 21
12 42
13 84
14 164
15 322
16 620
17 1200
18 2300
19 4429
20 8482
21 16303
22 31259
23 60105
24 115472
25 222332
26 428106
27 825774
28 1593669
29 3080004
30 5956902
31 11534689
32 22352962
33 43361663
34 84181720
35 163574114
36 318079104
37 619007004
38 1205471654
39 2349209058
40 4581032192

List of values

[1, 2, 4, 10, 21, 42, 84, 164, 322, 620, 1200, 2300, 4429, 8482, 16303, 31259, 60105, 115472, 222332, 428106, 825774, 1593669, 3080004, 5956902, 11534689, 22352962, 43361663, 84181720, 163574114, 318079104, 619007004, 1205471654, 2349209058, 4581032192]

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

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