It could be any number of your choice. Pick a number and I can find you a quartic (power 4) polynomial which will give the above four and your choice as the first five terms.
But the simplest cubic rule is
Un = (n3 - 6n2 + 8)/3 for n = 1, 2, 3, ...
which gives
U5 = 5
16 is the next number. All you do is sequentially add the next odd number. Therfore after 16 the next number would be 25... the next 36... the next 49... the next 54...
The next term is -2.
41 t(n) = (9n4 -110n3 + 477n2 -844n + 480)/12
what number comes next 1 -8 -16 -24 -33
16 is the next squared number.
The number 0 and the next is 2.
4
12
16 is the next number. All you do is sequentially add the next odd number. Therfore after 16 the next number would be 25... the next 36... the next 49... the next 54...
The next whole number after 1 is 2. However, the decimal after 1 can be an infinite chain of 0's, with a 1 at the end.
The next term is -2.
This series is of the function f(x) = x2+1, starting with x=0.The next number in the series is 26. The number after that is 37.
41 t(n) = (9n4 -110n3 + 477n2 -844n + 480)/12
what number comes next 1 -8 -16 -24 -33
1 1 1
1
The next number is 4, followed by -2