272259344081domain: NAppears in sequencesLeast prime p such that 2x^2 + p produces primes for x=0..n-1 and composite for x=n.at n=13A165234Primes p such that p + 2*k^2 is prime for at least 10 consecutive values of k starting from k=1.at n=21A271348Primes of the form 272259344081 + 2*n^2.at n=0A271366