215084

Appears in sequences

• Expansion of (1+x^4*C^2)*C^2, where C = (1-(1-4*x)^(1/2))/(2*x) is g.f. for Catalan numbers, A000108.at n=11A071747
• G.f.: A(x) = exp( Sum_{n>=1} A179115(n)*x^n/n ), where A179115(n) = Sum_{d|n} phi(d^tau(d)).at n=14A179114