Just copied what I saw on digitaltruth.com :-)
Recipes & dev times using Film Ilford Pan F+ 50
Ilford Pan F+ 50 at 64 in Agfa Rodinal 1:50
12 minutes at 20°C/68.0°F
Ilford Pan F+ 50 in Agfa Rodinal 1:50
11 minutes at 20°C/68.0°F
Pre-soak for a few minutes, 60 seconds continuous agitation, followed by 10 ...
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Ilford Pan F+ 50 in Agfa Rodinal 1+25
9 minutes at 20°C/68.0°F
Ilford Pan F+ 50 in Agfa Rodinal 1+50
11 minutes at 20°C/68.0°F