Tambola ticket generator

Every tambola evening starts the same way: somebody has to find tickets. Most "free ticket" pages hand you a PDF full of ads, or tickets that are not actually valid — wrong number of entries per row, or two numbers from the same decade in one column.

These are generated properly. Each ticket is 3 rows by 9 columns holding 15 numbers, exactly 5 per row, with every column drawn from its own decade and ascending top to bottom — the same generator that deals tickets in the online game, and every ticket is checked against those rules before you see it.