Sigma(10^(-K!) K from 1 to infinite.

來源: 於 2011-02-18 08:14:56 [舊帖] [給我悄悄話] 本文已被閱讀：次

=0.1100010000000000000000010000...1.........1..................1...

點後僅在第1,2,6,24,120,....為1,(K!位).