Hofstadter Figure-Figure sequences: Difference between revisions

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true</pre>
true</pre>
=={{header|Factor}}==
=={{header|Factor}}==
{{incorrect|Factor|See talk page}}
The core of this algorithm builds up a list of S and R one at a time. The solution to task 1 follows.
The core of this algorithm builds up a list of S and R one at a time. The solution to task 1 follows.
<lang factor>: next ( s r -- news newr )
<lang factor>: next ( s r -- news newr )