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493rd Lucas Number

493rd Number in the Lucas Number Sequence = 7769790006581794836315417026718114982822736329999469724305586980435409187727711750121668968517028834617

In general, the nth term is given by f(n-1)+f(n-2)

To understand this sequence and how it differs from the Fibonacci series, you might find it useful to read the Lucas Sequence tutorial over here.