“Remember seeing him” OR “Remember to see him”?

Which of these two phrases is correct – ‘remember seeing him’ OR ‘remember to see him’.

For example, which of the following are correct:

a) I dont remember seeing him OR I don’t remember to see him OR I don’t remember having seen him.
b) Do you remember going to Delhi/having gone to Delhi/to go to Delhi.
c) You never remember to call me.