Identifier
Identifier
Values
[1] => 1
[1,1] => 1
[1,2] => 2
[2,1] => 2
[1,1,1] => 1
[1,1,2] => 1
[1,2,1] => 2
[2,1,1] => 2
[1,1,3] => 2
[1,3,1] => 2
[3,1,1] => 2
[1,2,2] => 2
[2,1,2] => 2
[2,2,1] => 2
[1,2,3] => 3
[1,3,2] => 3
[2,1,3] => 3
[2,3,1] => 3
[3,1,2] => 3
[3,2,1] => 3
[1,1,1,1] => 1
[1,1,1,2] => 1
[1,1,2,1] => 1
[1,2,1,1] => 2
[2,1,1,1] => 2
[1,1,1,3] => 1
[1,1,3,1] => 2
[1,3,1,1] => 2
[3,1,1,1] => 2
[1,1,1,4] => 2
[1,1,4,1] => 2
[1,4,1,1] => 2
[4,1,1,1] => 2
[1,1,2,2] => 1
[1,2,1,2] => 2
[1,2,2,1] => 2
[2,1,1,2] => 2
[2,1,2,1] => 2
[2,2,1,1] => 2
[1,1,2,3] => 1
[1,1,3,2] => 2
[1,2,1,3] => 2
[1,2,3,1] => 3
[1,3,1,2] => 2
[1,3,2,1] => 3
[2,1,1,3] => 2
[2,1,3,1] => 3
[2,3,1,1] => 3
[3,1,1,2] => 2
[3,1,2,1] => 3
[3,2,1,1] => 3
[1,1,2,4] => 2
[1,1,4,2] => 2
[1,2,1,4] => 3
[1,2,4,1] => 3
[1,4,1,2] => 2
[1,4,2,1] => 3
[2,1,1,4] => 3
[2,1,4,1] => 3
[2,4,1,1] => 3
[4,1,1,2] => 2
[4,1,2,1] => 3
[4,2,1,1] => 3
[1,1,3,3] => 2
[1,3,1,3] => 2
[1,3,3,1] => 2
[3,1,1,3] => 2
[3,1,3,1] => 2
[3,3,1,1] => 2
[1,1,3,4] => 3
[1,1,4,3] => 3
[1,3,1,4] => 3
[1,3,4,1] => 3
[1,4,1,3] => 3
[1,4,3,1] => 3
[3,1,1,4] => 3
[3,1,4,1] => 3
[3,4,1,1] => 3
[4,1,1,3] => 3
[4,1,3,1] => 3
[4,3,1,1] => 3
[1,2,2,2] => 2
[2,1,2,2] => 2
[2,2,1,2] => 2
[2,2,2,1] => 2
[1,2,2,3] => 2
[1,2,3,2] => 3
[1,3,2,2] => 3
[2,1,2,3] => 2
[2,1,3,2] => 3
[2,2,1,3] => 2
[2,2,3,1] => 2
[2,3,1,2] => 3
[2,3,2,1] => 3
[3,1,2,2] => 3
[3,2,1,2] => 3
[3,2,2,1] => 3
[1,2,2,4] => 3
[1,2,4,2] => 3
[1,4,2,2] => 3
[2,1,2,4] => 3
[2,1,4,2] => 3
[2,2,1,4] => 3
[2,2,4,1] => 3
[2,4,1,2] => 3
[2,4,2,1] => 3
[4,1,2,2] => 3
[4,2,1,2] => 3
[4,2,2,1] => 3
[1,2,3,3] => 3
[1,3,2,3] => 3
[1,3,3,2] => 3
[2,1,3,3] => 3
[2,3,1,3] => 3
[2,3,3,1] => 3
[3,1,2,3] => 3
[3,1,3,2] => 3
[3,2,1,3] => 3
[3,2,3,1] => 3
[3,3,1,2] => 3
[3,3,2,1] => 3
[1,2,3,4] => 4
[1,2,4,3] => 4
[1,3,2,4] => 4
[1,3,4,2] => 4
[1,4,2,3] => 4
[1,4,3,2] => 4
[2,1,3,4] => 4
[2,1,4,3] => 4
[2,3,1,4] => 4
[2,3,4,1] => 4
[2,4,1,3] => 4
[2,4,3,1] => 4
[3,1,2,4] => 4
[3,1,4,2] => 4
[3,2,1,4] => 4
[3,2,4,1] => 4
[3,4,1,2] => 4
[3,4,2,1] => 4
[4,1,2,3] => 4
[4,1,3,2] => 4
[4,2,1,3] => 4
[4,2,3,1] => 4
[4,3,1,2] => 4
[4,3,2,1] => 4
click to show generating function       
Description
The number of lucky cars of the parking function.
A lucky car is a car that was able to park in its prefered spot.
Code
def statistic(pf):
    return len(pf.lucky_cars())
Created
Jun 20, 2013 at 11:13 by Viviane Pons
Updated
May 20, 2016 at 21:18 by Martin Rubey