programming-examples/c/Pattern_Programs/1 24 135 2468 13579.c

#include<stdio.h>
void  main()
{
    int i,j,k;
    for(i=1; i<=5; i++)
        {
            if(i%2==0)
                {
                    k=2;
                }
            else
                {
                    k=1;
                }
            for(j=1; j<=i; j++,k+=2)
                {
                    printf("%d ", k);
                }
            printf("\n");
        }
}