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>
| 820: | \[L_{820}\] | 7 × 2161 × 6074561 × 2289528296934161<16> × 2982164551574882675259154717841<31> × 2684571411430027028247905903965201<34> × 35165075516820640571136826540224165841<38> × 39567003934513707398183694292316316849727601<44> |