Brainfuck,127个字节
+[-->+>+[<]>-]>-->+[[.<<<]>>-.>>+<[[-]>[->+<]++++++++[-<++++++>>-<]>--[++++++++++>->-<<[-<+<+>>]]>+>+<]<<<[.<<<]>>.+.>[>>>]<<<]
在线尝试!
给定无限的磁带,理论上将永远运行。
0,1,-1,2,-2,3,-3,4,-4,5,-5,6,-6,7,-7,8,-8,9,-9,10,-10,11,-11,12,-12,13,-13,14,-14,15,-15,16,-16,17,-17,18,-18,19,-19,20,-20,21,-21,22,-22,23,-23,24,-24,25,-25,26,-26,27,-27,28,-28,29,-29,30,-30,31,-31,32,-32,33,-33,34,-34,35,-35,36,-36,37,-37,38,-38,39,-39,40,-40,41,-41,42,-42,43,-43,44,-44,45,-45,46,-46,47,-47,48,-48,49,-49,50,-50,51,-51,52,-52,53,-53,54,-54,55,-55,56,-56,57,-57,58,-58,59,-59,60,-60,61,-61,62,-62,63,-63,64,-64,65,-65,66,-66,67,-67,68,-68,69,-69,70,-70,71,-71,72,-72,73,-73,74,-74,75,-75,76,-76,77,-77,78,-78,79,-79,80,-80,81,-81,82,-82,83,-83,84,-84,85,-85,86,-86,87,-87,88,-88,89,-89,90,-90,91,-91,92,-92,93,-93,94,-94,95,-95,96,-96,97,-97,98,-98,99,-99,...
未压缩
+[-->+>+[<]>-]>-->+
[
[.<<<]>>-.>>+<
[[-]>[->+<]
++++++++[-<++++++>>-<]>--
[++++++++++>->-<<[-<+<+>>]]>+>+<
]<<<
[.<<<]>>.+.>
[>>>]<<<
]