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.

A054881 Number of walks of length n along the edges of an octahedron starting and ending at a vertex and also ( with a(0)=0 ) between two opposite vertices.

Table of values

n a(n)
0 1
1 0
2 4
3 8
4 48
5 160
6 704
7 2688
8 11008
9 43520
10 175104
11 698368
12 2797568
13 11182080
14 44744704
15 178946048
16 715849728
17 2863267840
18 11453333504
19 45812809728
20 183252287488
21 733007052800
22 2932032405504
23 11728121233408

List of values

[1, 0, 4, 8, 48, 160, 704, 2688, 11008, 43520, 175104, 698368, 2797568, 11182080, 44744704, 178946048, 715849728, 2863267840, 11453333504, 45812809728, 183252287488, 733007052800, 2932032405504, 11728121233408]

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

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