UVa 11028 Sum of Product (A007773，你懂的)

/*0.012s*/

#include<cstdio>
const int a[] = {0, 1, 1, 1, 3, 8, 21, 43, 69, 102, 145, 197, 261, 336, 425, 527, 645, 778, 929, 1097, 1285};

int main()
{
	int n, cas = 0;
	while (scanf("%d", &n), n)
		printf("Case #%d: %d\n", ++cas, a
);
	return 0;
}