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>
| 348: | \[L_{348}\] | 2 × 7 × 23 × 299281 × 834428410879506721<18> × 56058952425321966662183<23> × 1185031046372137517381447<25> |