that is fascinating! I know that my mom will not seat 13 people at a table. One year at Thanksgiving, she only set out 12 places and she and her sister took turns sitting there. The design of your page with its many variations of "13" is wonderful to look at!
Wonderful page .. love all the different 13 ...you will not believe it ... but a page with all house numbers 13 was my first idea ... had already downloaded a large number ... but eventually changed my idea ...