I actually can't think of any airports that don't number their gates sequentially
Like 1K, I can think of plenty of airports that are numbered sequentially.
Maybe I'm missing something and you're asking why they have odd numbers on one side and even numbers on the other side, but other than that, I can't think of any examples of what you're describing.
BTW, I can explain skipping huge blocks of numbers. Often, that is to allow for future expansion. An airport may buil out the center section of the sirport first, allowing for a future wing on either side, without having to renumber all of the gates.
[This message has been edited by robb (edited Dec 23, 2003).]