84517domain: NAppears in sequencesNumbers k such that 1000k+1, 1000k+3, 1000k+7, 1000k+9 are all primes.at n=30A064962Record values in A214551.at n=38A219898Numbers n such that A003144(n) = floor(alpha*n) + 1, where alpha = 1.839... is the positive real zero of x^3-x^2-x-1.at n=13A275158