Fh+2-1<=n<=2h+1-1
h>=log2(n+1)-1 (取上限,所以log2(45+1)=5.多取6)
h最低5
對照費氏數列
0 1 2 3 4 5 6 7 8 9 10
0 1 1 2 3 5 8 13 21 34 55
h最高9