I've been doing a fair bit of work on the Bradford Factor for work... it's really quite nasty. I've had to generate some figures but couldn't clock what valid numbers there were so I created this spreadsheet to look up valid figures (no prime numbers allowed... except you can up until a certain number). If it help then please use it. It's got the number of periods of time off along the left and the total number of days off along the top.
Also had to do some stuff on the Myers-Briggs Type Indicator and I wanted to know what they were, the table below has a title attribute to each cell which'll show a tool tip for each type: