&gt;&gt;Perhaps one should notice that this is one of the few hacks that people aren&#x27;t doing.&lt;&lt;<p>You told us -- &quot;Since I&#x27;m lazy, I&#x27;ll point out that most of the stuff is indirectly mentioned in this write-up: <a href="https:&#x2F;&#x2F;llogiq.github.io&#x2F;2015&#x2F;10&#x2F;03&#x2F;fast.html&quot;" rel="nofollow">https:&#x2F;&#x2F;llogiq.github.io&#x2F;2015&#x2F;10&#x2F;03&#x2F;fast.html&quot;</a><p>Here&#x27;s what people will read if they look there --<p>&quot;However, since the generator only produces 139968 separate numbers, the Haskell code just caches them all in an array.&quot;<p>Now you&#x27;re telling us that is not being done.