4,18,....,100,180,294

• It looks like nth term = n(n + 1)^2
  1 * 2^2 = 4
  2 * 3^2 = 18
  3 * 4^2 = 48
  4 * 5^2 = 100
  5 * 6^2 = 180
  6 * 7^2 = 294
  
  3rd term = 3 * 16 = 48
• 10 years agoHelpfull: Yes(9) No(0)
• 2^3-2^2=4
  3^3-3^2=18
  4^3-4^2=48
  5^3-5^2=100
  6^3-6^2=180
  7^3-7^2=294
• 10 years agoHelpfull: Yes(2) No(1)