It is not easy to ft the Fibonacci Sequence on to a toilet roll cover. There is not room to show much of the sequence. This crochet cover represents the numbers 1, 1, 2, 3, 5 and then reverses those terms in the opposite colours.

You will need less than 50 metres/yards DK in each of the two colours.

The ebook contains patterns for eleven knit and crochet toilet roll covers based on mathematical concepts. It also has a section that will help you to design your own covers.

The patterns are not available individually but if you want just one I can supply it in return for a small donation to my favourite charity.