Let
![$ S=K[x_1,\ldots,x_n]$](img19.png)
be the polynomial ring over the field

, and let

be a graded ideal. It is shown that for

the postulation number of

is bounded by a linear function of

, and it is a linear function of

, if

is generated in a single degree. By using the relationship of the

-vector with the higher iterated Hilbert coefficients of

it is shown that the Hilbert coefficients

of

are polynomials for

, whenever

is generated in a single degree.