/* R. J. Cano, Sep 13 2012 */

#include <stdio.h>

long a(long);

int main(void) {

	long m,N;
	
	printf("\n Please enter an upper bound to generate b-file: ");
	scanf("%li",&m);
	printf("\n");
	for (N=1;N<=m;N++) {
		printf("\n%li %li", N, a(N));		
	}
	
	return 0;
	
}

long a(long n) {

	return n%2 ? 3*n-2 : 3*n-1;
	
}