How to calculate the weight from input layer to output layer?

Hi,

I've searched online about the weight calculation. There are 40 variables input, 9 hidden layer, and 1 output.

The formula is w=net.iw is to calculate the weight from input to hidden, and the w=net.lw is to calculate the weight from hidden to output.

If I want to know the weight from input to output, how to calculate it?

One more question is that when I calculate the w=net.iw, there are 40 variables but only with 38 columns about the results. I am not sure why it demonstrated like that?

Thank you very much.

Cristina.