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例子
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1+2*x+2*x^2+3*x^3+6*x^4+9*x^5+15*x^6+30*x^7+54*x^8+97*x^9+。。。
a(0)=1到a(6)=15个二进制字符串:
() (0) (1,0) (0,0,1) (0,0,1,0) (0,0,1,1,0) (0,0,0,1,0,1)
(1) (1,1)(1,1,0)(0,0,1,1)(0,0,1,1,1)(0,0,1,0,0,1)
(1,1,1) (0,1,0,0) (0,1,1,0,0) (0,0,1,1,1,0)
(1,0,0,1) (1,0,0,1,0) (0,0,1,1,1,1)
(1,1,1,0) (1,0,0,1,1) (0,1,0,0,0,1)
(1,1,1,1) (1,0,1,0,0) (0,1,1,1,0,0)
(1,1,0,0,1) (1,0,0,1,1,0)
(1,1,1,1,0) (1,0,0,1,1,1)
(1,1,1,1,1) (1,0,1,1,0,0)
(1,1,0,0,1,0)
(1,1,0,0,1,1)
(1,1,0,1,0,0)
(1,1,1,0,0,1)
(1,1,1,1,1,0)
(1,1,1,1,1,1)
(结束)
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