Revision e796852d-3417-4fad-af15-ea97a93b2167 - Code Golf Stack Exchange

###Description
Chicken McNugget numbers are numbers that can be expressed as a sum of 6, 9 or 20 - the initial sizes of the famous [Chicken McNuggets](https://en.wikipedia.org/wiki/Chicken_nugget) boxes sold by McDonalds. In that sum, a number may occur more than once, so `6 + 6 = 12` is such a number too. The first Chicken McNugget numbers are:

 6
 9
 6 + 6 = 12
 6 + 9 = 15
 9 + 9 = 6 + 6 + 6 = 18
 20
 6 + 6 + 9 = 21
 ...
###Challenge
Your task is to write a program or function, that, given a positive integer, determines whether this number can be expressed in the described way, therefor is such a Chicken McNugget number. It should then output a truthy or falsy value based on it's decision.
###Test cases

 0 -> false
 6 -> true
 7 -> false
 12 -> true
 15 -> true
 21 -> true
 40 -> true
 42 -> true
This is [tag:code-golf], so the shortest answer in bytes wins and the standard loopholes apply!