G.2. The Map Class Library

Number of Map Classes. Encyclopedia of Integer Sequences Number: A019538, "Triangle of numbers k!*Stirling2(n,k)"

Example G-4. Number of Map Classes

             size
size    1   2   3   4    5    6   

   1    1
   2    1   2
   3    1   6   6                                        
   4    1   14  36  24                                      
   5    1   30  150 240  120                                         
   6    1   62  540 1560 1800 720