数字找规律(用公式表达)08,10,12,15,17,19,22,24,26,29,31,33,36.?
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向下增加7,向右增加2
第n行第m列的数是:7n+2m-1,1,An=A(n-1)+3 (当n-1是3的倍数时)否则后面改成+2,1,a a+2 a+2+2
a+7 a+7+2 a+7+2+2
a+7+7 a+7+7+2 a+7+7+2+2
a+7+7+7.....,1,2,2,3啊不断循环,1,x_________x+2_________x+2+2
x+7_______x+7+2_______x+7+2+2
x+7+7_____x+7+7+2_____x+7+7+2+2
x+7+7+7___x+7+7+7+2___x+7+7+7+2+2
x+7+7+7+7 ……,1,7x+2y-1(x代表行,Y代表列),1,08,10,12,
15,17,19,
22,24,26,
29,31,33,
36···
令t=【(n-1)/3】,t表示取(n-1)/3的结果的整数;
则an=a1+7t+2(n-3t-1)
=a1+2n-2+t
=8+2n-2+t
=2n+6+【(n-1)/3】
即an=2n+6+【(n-1)/3】,【(...,1,规律是:A、B、C为相邻的奇数;然后符合
A+7+7+…
B+7+7+…
C+7+7+…,0,
第n行第m列的数是:7n+2m-1,1,An=A(n-1)+3 (当n-1是3的倍数时)否则后面改成+2,1,a a+2 a+2+2
a+7 a+7+2 a+7+2+2
a+7+7 a+7+7+2 a+7+7+2+2
a+7+7+7.....,1,2,2,3啊不断循环,1,x_________x+2_________x+2+2
x+7_______x+7+2_______x+7+2+2
x+7+7_____x+7+7+2_____x+7+7+2+2
x+7+7+7___x+7+7+7+2___x+7+7+7+2+2
x+7+7+7+7 ……,1,7x+2y-1(x代表行,Y代表列),1,08,10,12,
15,17,19,
22,24,26,
29,31,33,
36···
令t=【(n-1)/3】,t表示取(n-1)/3的结果的整数;
则an=a1+7t+2(n-3t-1)
=a1+2n-2+t
=8+2n-2+t
=2n+6+【(n-1)/3】
即an=2n+6+【(n-1)/3】,【(...,1,规律是:A、B、C为相邻的奇数;然后符合
A+7+7+…
B+7+7+…
C+7+7+…,0,
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