372269domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 93.at n=7A031681Primes of the form F(i)^2 + F(j)^2, where F() are Fibonacci numbers.at n=15A045703Prime numbersat n=31687