This is entrance to foobar. It is pretty easy to figure out crossword using either a calculator to convert bases or (wolfram alpha for the lazy) and [0] for regex. I have not used regex in years, but got in easy.
[0] http://www.regexr.com/ . Hint mouse over regex after you type it for explanation of what will match, try it out in the text editor below. Fairly trivial.
[0] http://www.regexr.com/ . Hint mouse over regex after you type it for explanation of what will match, try it out in the text editor below. Fairly trivial.