#define    _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
#include<stdlib.h>
int main()
{
    int in;
    while (scanf("%d", &in) != EOF)
    {
        scanf("%d", &in);
        int x = in * in - in + 1;
        printf("%d", x);
        int i;
        for (i = 0; i < in - 1; i++)
        {
            printf("%d+", x + 2 * i);
        }
        printf("%d\n", x + 2 * (in - 1));

    }

    return 0;
}