-6142

Appears in sequences

• Expansion of 1/(1+x^2-2*x^3).at n=35A077912
• Imaginary parts of the recursive sequence a(n+2) = Sum_{k=0..n} binomial(n,k)*a(k)*a(n+1-k), with a(0)=1, a(1)=2i.at n=8A289087