I think N would retain a Wikipedia page. When you add a page for N+1, you update the page for N to include a history section: "N was the smallest number without

I think N would retain a Wikipedia page. When you add a page for N+1, you update the page for N to include a history section: "N was the smallest number without a wikipedia page, until December 8, 2014, when N+1 became the smallest number without a wikipedia page."