Am 02.01.2016 um 17:09 schrieb Tony van der Hoff: > On 02/01/16 16:57, Robin Koch wrote: >> sum([int(0.2**k*n) for k in range(1, int(log(n, 5))+1)]) > > But did you actually test it? Yes, should work for n >= 1. Why do you ask? -- Robin Koch