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.

A164354 Number of reduced words of length n in Coxeter group on 5 generators S_i with relations (S_i)^2 = (S_i S_j)^7 = I.

Table of values

n a(n)
0 1
1 5
2 20
3 80
4 320
5 1280
6 5120
7 20470
8 81840
9 327210
10 1308240
11 5230560
12 20912640
13 83612160
14 334295130
15 1336566780
16 5343813270
17 21365442180
18 85422543120
19 341533342080
20 1365506334720
21 5459518355670
22 21828050092440
23 87272125451010

List of values

[1, 5, 20, 80, 320, 1280, 5120, 20470, 81840, 327210, 1308240, 5230560, 20912640, 83612160, 334295130, 1336566780, 5343813270, 21365442180, 85422543120, 341533342080, 1365506334720, 5459518355670, 21828050092440, 87272125451010]

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

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