For 10 pluss LEDS a lm117 does not exists that can take the input voltage. If the voltage source is pretty much constant you do not need a lm117 regulator just a resistor. will do it.For that many LEDS it means off the main power 3vx50=150v dc. asume a big cap to bring it to 120v x1.41=169v dc minus some diodes drops. and that is ideal. The design is marginal with 50 leds And from your Lm117 design i suggest that you don't try something like this for obvious reasons allready point out to you.