It is possible to find a quartic (power 4) equation that will go through these four points and any number of your choice as the fifth.
However, to keep things simple, the following equation indicates that the next number is 15.
Un = n*(2n2 - 9n + 13)/6 for n = 1, 2, 3, ...
3263442
2310.
16
1
its +2, +2, -1... so the next is 10
1, 2, 0, 3, -1, 4, -2, 5, -3, 6
14 18 20
27
27
6 6 2 2 4
10
14