// a pattern like a pyramid with numbers increased by 1//
#include <stdio.h>
int main()
{
   int i,j,spc,rows,k,t=1;

   printf("Input number of rows : ");
   scanf("%d",&rows);

   spc=rows+4-1;
   for(i=1;i<=rows;i++)
   {
         for(k=spc;k>=1;k--)
            {
              printf(" ");
            }
       for(j=1;j<=i;j++)
        {
          printf("%d ",t++);
        }
    printf("\n");
    spc--;
   }
   return 0;
}