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Lucas Sequence

Defined with $L_{0} = 2$ , $L_{1} = 1$ , and $L_{n} = L_{n - 1} + L_{n - 2}$ when $n \geq 2$ . Related to the Fibonacci sequence.

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Format: small prime × proven prime_<size> × (probable prime)_<size> × [composite]_<size> × {unknown}_<size>

215:

L_{215}

11 × 431 × 1291 × 1721 × 6709 × 144481 × 1266715025281_<13> × 66163448516461_<14>

Index range: 215 – 215 << prev next >>