1,11,21,1211,111221,___,

• 1,11,21,1211,111221,___,
  1,11,21,1211,111221,312211
  
  Read the numbers
  1.. one 1... write as 11
  11.. two 1s.... write as 21
  21.. read as one 2 one1 ... 1211
  1211... one 1 one 2 two 1s... 111221
  111221... read as three 1s two 2s one 1... 312211
• 11 years agoHelpfull: Yes(13) No(1)
• 312211
  it is just like three time 1(31)
  two time 2(22)
  one time again 1(11)
  hence, 312211
• 11 years agoHelpfull: Yes(0) No(1)