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when toggle format what by license comment
Sep 20, 2018 at 6:37 comment added zodiac Your answer is perfectly fine. I had a typo in the first sum I am sorry. The sum should start at 1 and not at zero. Thank you for your help
Sep 20, 2018 at 6:36 vote accept zodiac
Sep 19, 2018 at 23:20 history answered Stijn B. CC BY-SA 4.0