152941domain: 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 26.at n=32A031614Primes p such that p, p+6, p+12, p+18 are consecutive primes and p = 6*k+1 for some k.at n=26A090837Prime numbersat n=14105