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.

A162941 Number of reduced words of length n in Coxeter group on 7 generators S_i with relations (S_i)^2 = (S_i S_j)^4 = I.

Table of values

n a(n)
0 1
1 7
2 42
3 252
4 1491
5 8820
6 52185
7 308700
8 1826160
9 10802925
10 63906150
11 378045675
12 2236381350
13 13229622000
14 78261652875
15 462967596000
16 2738748634125
17 16201445085000
18 95841881782500
19 566965863568125
20 3353964722666250

List of values

[1, 7, 42, 252, 1491, 8820, 52185, 308700, 1826160, 10802925, 63906150, 378045675, 2236381350, 13229622000, 78261652875, 462967596000, 2738748634125, 16201445085000, 95841881782500, 566965863568125, 3353964722666250]

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

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