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LucasL

Lucas Number (SymPy, WMA)

LucasL[n]

gives the nth Lucas number.

LucasL[n, x]

gives the nth Lucas polynomial $L_(x)$.

A list of the first five Lucas numbers:

• • Table[LucasL[n], {n, 1, 5}]

• • Series[LucasL[1/2, x], {x, 0, 5}]

• • Plot[LucasL[1/2, x], {x, -5, 5}]