Revision d4b6d184-3e72-4331-97db-5e757d0237d7 - Code Golf Stack Exchange

# gs2, <strike>28</strike> 27 (without `f`)

Hex:

 1b 2f fe cc 04 46 69 7a 7a 09 07 42 75 7a 7a 19 06 27 2d d8 62 32 ec 99 dc 61 0a

Explanation:

 1b 100
 2f range1 (1..n)
 fe m: (map rest of program)
 
 cc put0 (pop and store in register 0)
 04 string-begin
 Fizz
 09 9
 07 string-separator
 Buzz
 19 25
 06 string-end-array (result: ["Fizz"+chr(9) "Buzz"+chr(25)])
 
 27 right-uncons
 2d sqrt
 d8 tuck0 (insert value of register 0 under top of stack)
 62 divides
 32 times (string multiplication)
 ec m5 (creates block from previous 5 tokens, then calls map)
 
 99 flatten
 dc show0 (convert register 0 to string and push it)
 61 logical-or
 0a newline

Embedding 3 and 5 into the string constant doesn't work because `\x05` ends string literals.

Note: This problem can be solved in [1 byte](http://codegolf.stackexchange.com/a/58632/2537) with gs2 using the built-in `f`.