All the houses on this odd-numbered side of the street are numbered backwards, 1 at the southern end going up, northwards to 49 including 13

via StreetComplete 43.2

Attached photo(s):
https://westnordost.de/p/96264.jpg
https://westnordost.de/p/96265.jpg
https://westnordost.de/p/96266.jpg