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.

A164911 Number of reduced words of length n in Coxeter group on 20 generators S_i with relations (S_i)^2 = (S_i S_j)^8 = I.

Table of values

n a(n)
0 1
1 20
2 380
3 7220
4 137180
5 2606420
6 49521980
7 940917620
8 17877434590
9 339671253600
10 6453753750000
11 122621319950400
12 2329805054365200
13 44266295563783200
14 841059606797924400
15 15980132359795392000

List of values

[1, 20, 380, 7220, 137180, 2606420, 49521980, 940917620, 17877434590, 339671253600, 6453753750000, 122621319950400, 2329805054365200, 44266295563783200, 841059606797924400, 15980132359795392000]

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

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