2,12,36,80,150,__,__

• n^3 + n^2
  1^3 + 1^2 = 2
  2^3 + 2^2 = 12
  3^3 + 3^2 = 36
  .
  .
  6^3 + 6^2 = 252
• 11 years agoHelpfull: Yes(9) No(0)
• 2,12,36,80,150,__,__
  2,12,36,80,150,252,392
  
  T(n)=(n+1)^2*(n-1)+(n+1)
  T(1)=0*2^2+2
  T(2)=9*1+3=12
  T(3)=16*2+4=36
  T(4)= 25*3+5=80
  T(5)= 36*4+6=150
  T(6)= 49*5+7= 245+7=252
  T(7)=64*6+8=392
• 11 years agoHelpfull: Yes(7) No(3)
• 1^3+1^2, 2^3+2^2, 3^3+3+2 , 4^3+4^2, 5^3+5^2, 6^3+6^2....
  
  Ans. 252
  
  
• 11 years agoHelpfull: Yes(3) No(2)
• 252,392.....................dif is 10,24,44,70,102,144...the dif betn them is 14,20,26,32,38....the diff is 6
• 11 years agoHelpfull: Yes(2) No(4)