8386817domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) is the largest prime of the form x^2 + 1 <= 2^n.at n=22A083849Numbers of the form n^2+1 such that 3^(m+3)==9 (mod m) where m=n^4-1.at n=13A212876Terms of A002496 that are the average of two distinct terms of A002496.at n=18A327741Prime numbersat n=564059