262183domain: NAppears in sequencesFirst primitive GF(2)[X] polynomial of degree n.at n=17A132447First primitive GF(2)[X] polynomial of degree n with at most 5 terms.at n=17A132449First primitive GF(2)[X] polynomials of degree n with exactly 5 terms.at n=17A132451a(n) is the next Ulam number (A002858) after 2^(n-1).at n=19A347212