84929domain: NAppears in sequencesNumbers k such that x^k + x^5 + 1 is irreducible over GF(2).at n=33A057474G.f.: A(x) = Sum_{n>=0} x^n / Product_{k=1..n} (1 - k*x^k).at n=22A193196Numbers n such that x^(n-5)*(x+1)^5+1 is irreducible in F2[x].at n=26A267918