2495118

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=22A024947
• G.f. A(x) satisfies: A( x*A(x)^2 - x^2*A(x) ) = x^4.at n=15A291614