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490th Lucas Number

490th Number in the Lucas Number Sequence = 1834198612451841980590573354049832310520934744426580487728496070230903857873047734872321602858257776409

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.