14057472

Appears in sequences

• Odd powers of 2 multiplied by Catalan numbers.at n=8A052707
• Number of walks of length n on square lattice, starting at origin, staying on points with x+y >= 0.at n=13A060899
• a(n) = (3*0^n + 4^n*binomial(2*n,n))/4.at n=7A099045
• Negated coefficients of Chebyshev T polynomials: a(n) = -A053120(n+14, n), n >= 0.at n=10A209404
• a(n) = 2^n*n!/((floor(n/2)+1)*floor(n/2)!^2).at n=13A240558
• Expansion of g.f.: Catalan(x)/Catalan(-x).at n=15A349648