已知3的一次方=3,3的平方=9,3的三次方=27,3的四次方=81,3的五次方=243,3的六次方=729……A=2(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)+1 A的个位数字为( )
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![已知3的一次方=3,3的平方=9,3的三次方=27,3的四次方=81,3的五次方=243,3的六次方=729……A=2(3+1)(3^2+1)(3^4+1)(3^8+1)(3^16+1)+1 A的个位数字为( )](/uploads/image/z/98897-41-7.jpg?t=%E5%B7%B2%E7%9F%A53%E7%9A%84%E4%B8%80%E6%AC%A1%E6%96%B9%3D3%2C3%E7%9A%84%E5%B9%B3%E6%96%B9%3D9%2C3%E7%9A%84%E4%B8%89%E6%AC%A1%E6%96%B9%3D27%2C3%E7%9A%84%E5%9B%9B%E6%AC%A1%E6%96%B9%3D81%2C3%E7%9A%84%E4%BA%94%E6%AC%A1%E6%96%B9%3D243%2C3%E7%9A%84%E5%85%AD%E6%AC%A1%E6%96%B9%3D729%E2%80%A6%E2%80%A6A%3D2%283%2B1%29%283%5E2%2B1%29%283%5E4%2B1%29%283%5E8%2B1%29%283%5E16%2B1%29%2B1+A%E7%9A%84%E4%B8%AA%E4%BD%8D%E6%95%B0%E5%AD%97%E4%B8%BA%EF%BC%88+%EF%BC%89)
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