3 ms·
It looks like proving that n^2 + 1 is impossible is still an open problem: http://www.wfnmc.org/mc20101.pdf http://www.wfnmc.org/mc20101.pdf.
by evanpw 11y ago
It looks like proving that n^2 + 1 is impossible is still an open problem: http://www.wfnmc.org/mc20101.pdf http://www.wfnmc.org/mc20101.pdf.