8,17,35,62,134,215,?

• ans:503
  sum of each term is 8
  diff of two num is multiple of 9
  17-8=9;35-17=18;62-35=27;134-62=78;215-134=81
  9=3^2;18=3^2*2;27=3^3;72=3^2*2^3;
  81=3^4;for next term the diff is-3^2*2^5
  adding it to 215 we get 503 whose sum is also is 8
  
• 11 years agoHelpfull: Yes(0) No(0)