Roulette Tracking

Thank you so much for your response! Below is a screenshot of my tracking sheet, I input the spin results in column N (next result to be input into row 24) and the rest of the sheet displays those results as they pertain to different bets/layouts on the roulette board. The top of the sheet is frozen (row 8 and above) and the data field runs downward for 500 results. 

My goal is to have numbers in each of the column headings (columns O to AF in this example) that reflect the number of spin results since each occurred.  

The top left obviously shows the layout of the numbers on a roulette board and I would like to replace those numbers with the information 'number of spins since last occurrence', example; instead of showing the number 7 (D6), I would like to display the number of spins since 7 was the result.

I appreciate your help!