Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
(x+floor(h/2)-floor(y/2) = c, x+floor((y+1)/2) = r) where c= 1 and r = 1 and h=5
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random