#include <stdio.h>
int main()
{
	int n,    	//Variable for number to be taken as input
	    i;		//Variable for iteration of 'for' loop
	printf("Enter the Number  ");
	scanf("%d",&n);
	for( i=3; i<=n; i+=3)
		printf("%d ",i);
	printf("\n");
	return 0;
}