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>
| 655: | \[L_{655}\] | 11 × 1049 × 2621 × 414988698461<12> × 5477332620091<13> × 197197788140611781209503311338276667637976401152221<51> × 5685409429881978264051189958530450429753391663473961961<55> |