##Challenge:

Here we have the first 100 items of a sequence:

    6,5,4,3,2,1,66,65,64,63,62,61,56,55,54,53,52,51,46,45,44,43,42,41,36,35,34,33,32,31,26,25,24,23,22,21,16,15,14,13,12,11,666,665,664,663,662,661,656,655,654,653,652,651,646,645,644,643,642,641,636,635,634,633,632,631,626,625,624,623,622,621,616,615,614,613,612,611,566,565,564,563,562,561,556,555,554,553,552,551,546,545,544,543,542,541,536,535,534,533,...

How is this sequence formed? We first have the number in the range `[6, 1]` (all possible values of a single dice from highest to lowest). We then have the numbers `[66..61, 56..51, 46..41, 36..31, 26..21, 16..11]` (all possible concatted values of two dice from highest to lowest). Etc.  
This is related to the OEIS sequence [A057436: *Contains digits 1 through 6 only*](http://oeis.org/A057436), but with all the same-digit numbers sorted backwards in the sequence.

The challenge is to choose one of these three options for your function/program with the sequence above:

1. Take an input \$n\$ and output the \$n\$'th value of this sequence, where it can be either 0-indexed or 1-indexed.
2. Take an input \$n\$ and output the first \$n\$ or \$n+1\$ values of this sequence.
3. Output the values from the sequence indefinitely.

Of course, any reasonable output format can be used. Could be as strings/integers/decimals/etc.; could be as an (infinite) list/array/stream/etc.; could be output with space/comma/newline/other delimiter to STDOUT; etc. etc. **Please state what I/O and option you're using in your answer!**

##General rules:

- This is [tag:code-golf], so shortest answer in bytes wins.  
  Don't let code-golf languages discourage you from posting answers with non-codegolfing languages. Try to come up with an as short as possible answer for 'any' programming language.
- [Standard rules apply](https://codegolf.meta.stackexchange.com/questions/2419/default-for-code-golf-program-function-or-snippet/2422#2422) for your answer with [default I/O rules](https://codegolf.meta.stackexchange.com/questions/2447/default-for-code-golf-input-output-methods/), so you are allowed to use STDIN/STDOUT, functions/method with the proper parameters and return-type, full programs. Your call.
- [Default Loopholes](https://codegolf.meta.stackexchange.com/questions/1061/loopholes-that-are-forbidden-by-default) are forbidden.
- If possible, please add a link with a test for your code (i.e. [TIO](https://tio.run/#)).
- Also, adding an explanation for your answer is highly recommended.

**Here some larger test cases if you choose option 1:**

    n         0-indexed output    1-indexed output
    
    500       5624                5625
    750       4526                4531
    1000      3432                3433
    9329      11111               11112
    9330      666666              11111
    9331      666665              666666
    10000     663632              663633
    100000    6131232             6131233