358307domain: NAppears in sequencesNumber of ordered 5-tuples of integers from [ 2,n ] with no global factor.at n=31A015651Numbers k such that k^2 + 1 is divisible by a 7th power.at n=9A218574Expansion of 1/(g * (2 - g^2)), where g = 1+x*g^2 is the g.f. of A000108.at n=9A391516