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>
| 450: | \[L_{450}\] | 2 × 33 × 41 × 107 × 401 × 601 × 1801 × 2521 × 570601 × 10783342081<11> × 87129547172401<14> × 186374563189054810201<21> × 427694148584338087778220001<27> |