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>
| 404: | \[L_{404}\] | 7 × 4057630561 × 365577168608254038823<21> × 259810712071020092939911160510563206299521186512399367<54> |