C <del>83</del> <del>77</del> <del>76</del> 74
-

    x;main(n){for(;x<4;x++,puts(""))for(n=0;n<16;)putchar(49-!(n++&(1<<x)));}

Pretty straightforward.

    x;
    main(n){
        for(;x<4;x++,puts(""))
            for(n=0;n<16;)
                putchar(49-!(n++&(1<<x)));
    }