Numbers m such that for any positive integers (x, y), if x * y = m where x <= y, then x^2 + 2*y^2 is a prime number.
A287930
Numbers m such that for any positive integers (x, y), if x * y = m where x <= y, then x^2 + 2*y^2 is a prime number.
Terms
- a(0) =1a(1) =3a(2) =21a(3) =33a(4) =93a(5) =105a(6) =123a(7) =177a(8) =219a(9) =237a(10) =321a(11) =417a(12) =489a(13) =537a(14) =633a(15) =699a(16) =813a(17) =951a(18) =1011a(19) =1299a(20) =1419a(21) =1641a(22) =1923a(23) =1959a(24) =2073a(25) =2211a(26) =2433a(27) =2661a(28) =3387a(29) =3453
External references
- oeis: A287930