21282912domain: NAppears in sequencesa(n) = Fibonacci(n)*A109041(n) for n>=1, with a(0)=1, where A109041 lists the coefficients in eta(q)^9/eta(q^3)^3.at n=24A205973Numbers n such that there exists an x!=n that makes {x,x,x,n} an amicable multiset.at n=13A259305