C passing an array pointer to a function that gets different results

Question

C passing an array pointer to a function that gets different results

I am new to C and have problems with this code.

int * choose(int * got, int n_chosen, int len, int max_types, int n, int states, int * comb){
    int i;
    if (n_chosen == len) {
            if (!got) return NULL;

            for (i = 0; i < len; i++){
                comb[len*n + i] = times[got[i]];
                printf("%d\n",comb[len*n + i] );
                }
            ++n;
            return NULL;
    }

    for (i = 0; i < max_types; i++) {
            if (got) got[n_chosen] = i;
            choose(got, n_chosen + 1, len, max_types, n, states, comb);
    }
    return comb;
}

I basically have the following code:

int num_states = (int) pow(4.0,(double)lab->color_count);
int num = lab->room_count * num_states;

int chosen[4];
int * combinations =  malloc(sizeof(int)*num_states*lab->color_count);
choose(chosen, 0, lab->color_count, 4, 0, num_states, combinations);

int a, b;

for(b=0; b < num_states; ++b){
    for(a = 0; a < lab->color_count; ++a){
        //printf("%d\t", combinations[b*lab->color_count + a]);
        printf("%d\t", combinations[b*lab->color_count + a]);
    }
    printf("\n");
}

The problem is when I print an array in fuction, I get the correct values, but when printed in basic random values, they print. As I understand it, I passed a pointer, so the values should be the same. Can someone explain to me what is happening and how to fix it?

Additional information: the method is designed to calculate combinations.

EDIT: MVCE

#include <stdio.h>
#include <stdlib.h>

const int times[] = { 0, 1, 2, 3 };
long choose(int * got, int n_chosen, int len, int max_types, int n, int states, int * comb){
        int i;
        long count = 0;
        if (n_chosen == len) {
                if (!got) return 1;

                for (i = 0; i < len; i++){
                    comb[len*i + n] = times[got[i]];
                    printf("%d\n",comb[len*i + n] );
                }
                return 1;
        }

        for (i = 0; i < max_types; i++) {
                if (got) got[n_chosen] = i;
                count += choose(got, n_chosen + 1, len, max_types, n, states, comb);
                ++n;
        }
        return count;
}

int main(){
        int num_states = 4;

        int chosen[4];
        int * combinations =  malloc(sizeof(int)*num_states*1);
        choose(chosen, 0, 1, 4, 0, num_states, combinations);
        printf("\n");
        int a, b;
        for(b=0; b < 1; ++b){
            for(a = 0; a < num_states; ++a){
                printf("%d\n", combinations[b*2 + a]);
            }
        }

        return 0;
}