Submitted by michael on Sat, 03/16/2019 - 11:50 URL https://aperiodical.com/2019/03/buzz-in-when-you-think-you-know-the-answer/ Excerpt How many ways are there of writing some natural number $n$ as the sum of two squares? $?=?^2+?^2$ I don’t want an answer for some particular $n$ . I don’t even want a general formula. I just want to know… on average. Tags wtfmath