Get Friday the 13ths Linq Style

Infinate.cs

void Main()
{
	var next5Friday13 = DateTime.Today
	.Recurse(a=>a.AddDays(1))
	.Where(a=>a.Day == 13 && a.DayOfWeek == DayOfWeek.Friday).Take(5);
	
}
public static class Extension
{
	public static IEnumerable<T> Recurse<T>(this T obj, Func<T,T> action)
	{
		var local = obj;
		while(true)
		{
		  local = action(local);
		  yield return local;
		}
	}
}