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>
| 225: | \[L_{225}\] | 22 × 11 × 19 × 31 × 101 × 151 × 181 × 541 × 12301 × 18451 × 221401 × 15608701 × 3467131047901<13> |