Write a program to generate the series 1 3 4 8 15 27 50 92 169 311 ....

#include<stdio.h>

 int main()

 {

 int a=1,b=3,c=4,d,i,n;

 scanf("%d",&n);

 printf("%d %d %d ",a,b,c);

 for(i=4;i<=n;i++)

 {

 d=a+b+c;

 printf("%d ",d);

 a=b;

  b=c;

 c=d;

 }

 return(0);

 }