程序代码：

#include <stdio.h>
int main(void)
{
int i, an;
long long s;
an = 2;
s = 0;
for (int i = 1; i <=30; ++i)
{
    s = s+an;
    an = 2*an+3;
    

    }
    printf("%llu\n",s );
    return 0;
}

程序代码：

#include <stdio.h>
int main(void)
{
int i;
long long s,an;
an = 3;
s = 1;
for (int i = 1; i <=10; ++i)
{
    s = s*an;
    an = an*an+1;
    

    }
    printf("%llu\n",s );
    return 0;
}