C :

#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <time.h>
int main()
{
  //  freopen("in","r",stdin);
  //  freopen("out","w",stdout);


    int a[21];
    int i;
    while(scanf("%d%d",&a[1],&a[2])!=EOF)
    {

for (i=3;i<=20;i++)
if (i%2==0)
a[i]=a[i-2]*2+1;
else
a[i]=a[i-2]+2*i;
for (i=1;i<20;i++)
printf("%d ",a[i]);
printf("%d\n",a[i]);



    }
  return 0;
}

C++ :

#include<stdio.h>
int main()
{
	int a[100],i;
	while(scanf("%d %d",&a[1],&a[2])!=EOF)
	{
	for(i=3;i<=20;i++)
	{
		if(i%2==0)
			a[i]=a[i-2]*2+1;
		else
			a[i]=a[i-2]+2*i;
	}
	for(i=1;i<20;i++)
		printf("%d ",a[i]);
	printf("%d\n",a[20]);
	}
	return 0;
}