answersLogoWhite

0

Not sure about "completes" because the sequence continues.

The next number is 20 and you can verify that by fitting the following cubic equation:

u(n) = 5*(-n3 + 36n2 - 257n + 558)/12 for n = 1, 2, 3, 4, ...

User Avatar

Wiki User

13y ago

What else can I help you with?