160071domain: NAppears in sequencesn^4 + n-th prime.at n=19A089621Consider the function f(n)=1/(Abs(n-r)), where r is the Dottie number, A003957. Let g(n) be defined by the recursion g(n)=Cos(g(n-1)),g(0)=1. Now, a(n)=floor(f(g(n))).at n=27A180619