Douglas Hofstadter proposed something like this long ago, only the task was to find analogies in sequences. For example, what number in the sequence 1 2 3

Douglas Hofstadter proposed something like this long ago, only the task was to find analogies in sequences. For example, what number in the sequence 1 2 3 4 5 4 5 4 3 2 1 corresponds to the second 3 in this one? 1 2 3 2 3 2 1 If that seemed too easy, what's the corresponding number in this one? 5 4 3 2 1 2 1 2 3 4 5 How about this? 1 2 3 4 5 6 7 6 5 4 5 4 3 2 1