I need your help! My friend has gone missing and I have no clue where he could be! However, he did manage to get a message out to me:
Kidnapped. Send help. I am here:
port town. $\left\lfloor\sqrt{\frac{x}{500334.5}}\right\rfloor$, add $^{\circ}\ '$
- Rick
P.S. Remember my favourite three things!
Obviously, he hid the location, and that is where I need your help. To aid you, I vaguely remember him mentioning his favourite three things as fonts, the number 18 and the OEIS.
To send for help, I need both the city and country that he is currently in. Thanks for your help!
Hint:
Only the bold bits and the formula are relevant to the puzzle.
Extra notes (hints):
It turns out Rick was able to send another note:
Try writing the special part of the original message in a different font.
- Rick
And another:
When you find the two hidden numbers $x$ and $y$...
OEIS[x][y]
- Rick