Index map for the sheets of National Maps of Switzerland 1:50,000 (print) and the tiles the Swiss Map Raster 50 (digital) by the Swiss Federal Office of Topography (Swisstopo). With a digital-only tile in light grey.
The sheets (tiles) are on a 10x11 grid. Standard sheets cover an area of 24 km x 35 km (840 km²).
There are few differences between the two editions:

some printed sheets include adjacent areas.
numbering differs between print and digital:
249 bis: Nauders → 350
259 bis: Glurns/Glorenza → 360
additional digital tile (in light grey), only parts of the area:
370
own svg based on File:Topo 25 sheets orig.jpg, Category:Swisstopo 1:50'000 map sheets
Federal Office of Topography