using System;
namespace Fibonacci {
internal class Program {
private static ulong Fibonacci(ulong number) {
if (number <= 1) return 1;
else return Fibonacci(number - 2) + Fibonacci(number - 1);
}
private static void Main(string[] args) {
Console.WriteLine("Ausgabe der Fibonacci-Folge bis zur 20. Zahl.");
for (ulong i = 0; i < 20; i++) {
Console.Write($"{Fibonacci(i)}, ");
}
Console.ReadLine();
}
}
}
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