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>
| 408: | \[L_{408}\] | 2 × 47 × 1103 × 2447 × 23663 × 562627837283291940137654881<27> × 5474303442249842401513080472803833316281938081<46> |