602801domain: 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 62.at n=21A031650a(n) = 1250*n^2 - 100*n + 1.at n=21A154374a(n) = 5000*n^2 - 200*n + 1.at n=10A157516Prime numbersat n=49315