※ 引述《madduxwin (師出名門)》之銘言：
: a1=1,a2=3,a3=5,a4=8
: a5=13,a6=19,a7=25,a8=32
: a9=41,a10=51,a11=61,a12=72......以此規則
: 試求一般項an?
0, 1, 3, 5, 8, 13, 19, 25, 32, 41, 51, 61, 72, 85, 99, 113, 128,
1 2 2 3 5 6 6 7 9 10 10 11 13 14 14 15
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1 0 1 2 1 0 1 2 1 0 1 2 1 0 1
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1 1 -1 -1 1 1 -1 -1 1 1 -1 -1
國中有考那樣難嗎 其餘交給高手 做後半段
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