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A sequence is generated by the recurrence relation Ur+1 = 1/Ur -3. Given that U2 = U1 find the possible of U1

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    U1=U1
    U2=U1
    U3=U3
    U4=U4
    for r>3, we have
    U5 = 1/U1 = 1/U1
    U6 = 1/U2 = 1/U1
    U7 = 1/U3
    Without some info about U3 and U4, I don't see what we can deduce.

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