Write a program in C to print the first 20 numbers of the Pell series

# include <stdio.h>
# include <stdlib.h>


int main()
{
	int n,a=1,b=0,c;
	printf("\n\n Find the first 20 numbers of the Pell series: \n");
	printf(" --------------------------------------------------\n");	
    printf(" The first 20 numbers of Pell series are: \n");
    c=0;
    printf(" %d ",c);
    for(n=1; n<20; n++)
     {
      c= a + 2*b;
      printf("%d ",c);
      a = b;
      b = c;
     }
	 printf("\n");
}