344365domain: NAppears in sequencesPowers of sqrt(17) rounded down.at n=9A017955Powers of fourth root of 17 rounded down.at n=18A018093Integer part of square root of A001017: a(n) = floor(n^(9/2)).at n=17A238170Numbers n such that n^6+6 and n^6-6 are prime.at n=30A239429