int main ()
{
    int a[20][20], i, j, n;
    cout<<"n=";cin>>n;
    for (i=1;i<=n;i++)
    {
        a[i][1]=i+1;
        a[i][n]=i+n;
        a[1][i]=1+i;
        a[n][i]=n+i;

    }
    for (i=2;i<=n-1;i++)
        for (j=2;j<=n-1;j++)
        a[i][j]=a[i-1][j-1]+a[i-1][j]+a[i-1][j+1];
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=n;j++)
            cout<<a[i][j]<<" ";
        cout<<endl;
    }
    return 0;

    }