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.

A166558 Number of reduced words of length n in Coxeter group on 13 generators S_i with relations (S_i)^2 = (S_i S_j)^12 = I.

Table of values

n a(n)
0 1
1 13
2 156
3 1872
4 22464
5 269568
6 3234816
7 38817792
8 465813504
9 5589762048
10 67077144576
11 804925734912
12 9659108818866
13 115909305825456
14 1390911669894318
15 16690940038597968
16 200291280461569440
17 2403495365519559168
18 28841944386003420672
19 346103332629265575936

List of values

[1, 13, 156, 1872, 22464, 269568, 3234816, 38817792, 465813504, 5589762048, 67077144576, 804925734912, 9659108818866, 115909305825456, 1390911669894318, 16690940038597968, 200291280461569440, 2403495365519559168, 28841944386003420672, 346103332629265575936]

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

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