func 𝑳(n, 𝑳0 = 1, 𝑳1 = 1, 𝑳add = 1) {
    { (𝑳0, 𝑳1) = (𝑳1, 𝑳0 + 𝑳1 + 𝑳add) } * n
    return 𝑳0
}

say "The first 25 Leonardo numbers:"
say 25.of { 𝑳(_) }

say "\nThe first 25 numbers using 𝑳0 of 0, 𝑳1 of 1, and adder of 0:"
say 25.of { 𝑳(_, 0, 1, 0) }