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>
| 338: | \[L_{338}\] | 3 × 2027 × 90481 × 141283 × 404112157123<12> × 478061565712797524641<21> × 2892106995173496522201467<25> |