let n = 61
let l = [0, 1]

func fusc(n) {
    return l[n] when n < l.Length()
    let f = (n &&& 1) == 0 ? l[n >>> 1] : l[(n - 1) >>> 1] + l[(n + 1) >>> 1]
    l.Add(f)
    return f
}

var lst = true
var w = -1
var c = 0
var t = nil
var res = ""

print("First \(n) numbers in the fusc sequence:")
for i in 0..Integer.Max {
    let f = fusc(i)
    if lst {
        if i < 61 {
            print("\(f) ", terminator: "")
        } else {
            lst = false
            print("")
            print("Points in the sequence where an item has more digits than any previous items:")
            print("Index/Value:")
            print(res)
            res = ""
        }
    }
    t = f.ToString().Length()
    if t > w {
        w = t
        res += (res == "" ? "" : "\n") + "\(i)/\(f)"
        if !lst {
            print(res)
            res = ""
        }
        c += 1
        if c > 5 {
            break
        }
    }
}
l.Clear()