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

int main(int argc, char * argv[]) {
	int table[30][30] = {};
	for (int x = 0; x < 30; x++) {
		for (int y = 0; y < 30; y++) {
			if (y == 0 || y == x) table[x][y] = 1; else table[x][y] = 0;
		}
	}
	
	for (int l = 1; l < 30; l++) {
		for (int c = 1; c < l; c++) {
			int t1 = table[l-1][c-1];
			int t2 = table[l-1][c];

			table[l][c] = t1 + t2;
		}
	}

	for (int l = 0; l < 15; l++) {
		for (int c = 0; c <= l; c++) {
			printf("%4d ", table[l][c]);
		}
		printf("\n");
	}
	return EXIT_SUCCESS;
}