User talk:Wang62901

Euler's trinomial
I have reverted your good faith edit with edit summary "40^2+40+41 is composite. The formula has two variants giving the same 40 distinct primes: n^2-n+1 for n=1..40, and n^2+n+1 for n=0..39. We use the former".

Both variants are common. I guess you have seen the latter. Euler himself said n2−n+41, or actually 41−x+xx:. PrimeHunter (talk) 20:18, 29 August 2011 (UTC)