33.
The sequence (not series) can be defined by
Un = (n4 - 6n3 - 4n2 + 63n - 36)/6 for n = 1, 2, 3, ...
Chat with our AI personalities
it is 31818 - 8 = 1010 - 4 = 66 - 2 = 44 - 1 = 3
The next number in the series 2-4-3-9-4 is 16. 2 squared is 4, 3 squared is 9, 4 squared is 16
11 comes next.
The next four number in the sequence are... 4,5,5 & 6
10 4 3 11 15 9 8 16 20....