LINKS
Eric Weisstein's World of Mathematics, <a href="httphttps://mathworld.wolfram.com/LucasNumber.html">Lucas Number</a>
Eric Weisstein's World of Mathematics, <a href="httphttps://mathworld.wolfram.com/LucasNumber.html">Lucas Number</a>
proposed
approved
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R. K. Guy, Unsolved Problems in Number Theory, Section A3.
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reviewed
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Ron Knott, <a href="http://www.maths.surrey.ac.uk/hosted-sites/R.Knott/Fibonacci/lucas200.html"> The First 200 Lucas numbers and their factors</a>.
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