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>
277: | \[L_{277}\] | 1109 × 5923369 × 1003666289 × 322458613167451<15> × 3647646099535497480264359<25> |