Help:=proc(): print(`L(n)`): 
end:

#W(n): true if n Pennies is a winning position
W:=proc(n): not L(n):end:

#L(n): true if n Pennies is a losing position
L:=proc(n)
option remember:

 if n=0 then
    return true:
 fi:

if n=1 then
 return false:
fi:


 if W(n-1) and W(n-2) then
  return true:
 fi:

false:
end: