No solution

來源: 於 2014-10-17 14:31:15 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

n has to be odd. If k>=3, mod 8 on both sides, we have 5 = 1 (mod 8), which is wrong.

k=1 or 2 leads no solution