59495domain: NAppears in sequencesNumbers k such that phi(k) is a perfect sixth power.at n=36A078166Coefficient array for polynomials P(n,x)=x*P(n-1,x)+floor(n^2/4)*P(n-2,x), P(0,x)=1,P(1,x)=x.at n=71A178116Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and 2w+x+y>2.at n=25A211619