498432

Appears in sequences

• a(n) = Sum_{i=1..floor((n+2)/4)} a(2i-1)*a(n-2i+1), with a(1)=a(2)=1 and a(3)=3.at n=20A024947
• From expansion of Belyi function for octahedron.at n=10A066405
• G.f.: (1+14*x+x^2)^3/((1-x))^4.at n=10A113922