Lucas Sequence
Defined with \(L_0=2\), \(L_1=1\), and \(L_n=L_{n-1}+L_{n-2}\) when \(n\geq2\). Related to the Fibonacci sequence.
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 380: | \[L_{380}\] | 7 × 2161 × 15062006801<11> × 1091346396980401<16> × 104641758597793369564291770632634826877317038542801<51> |