If we increased the value of N in the formula that generates the plots, we’d see more repetitions extending further down.Since 19 is a prime, there will be more exponential sums this year that are periodic in this latter sense..I doubled the value of N so the plot will always display at least two periods.The fact that 19 is prime also means there will be more intricate plots this year..For example, here’s the plot for March 17, 2019compared to the plot for March 17, 2018.There will also be a few simpler but strange plots..The plot for January 19 is unlike anything I’ve seen since starting this page.Related postsSimplest exponential sumImage for the New Year. More details