1526726656

Appears in sequences

• 3-fold convolution of A000302 (powers of 4).at n=12A038845
• 4-fold convolution of A000302 (powers of 4); expansion of g.f. 1/(1-4*x)^4.at n=11A038846
• Coefficients of power series that satisfies A(x)^2 - 4*x*A(x)^3 = 1, A(0)=1.at n=11A078531
• Product of three solutions of the Diophantine equation x^3 - y^3 = z^2.at n=7A085479
• Number of symmetric non-crossing connected graphs on n equidistant nodes on a circle.at n=22A089073
• Write the coefficient of x^n/n! in the expansion of (x/(exp(x)-1))^(1/2) as f(n)/g(n); sequence gives g(n).at n=12A242225
• a(n) = denominator(N(1/2, n, 1)) where N(a, n, x) is the n-th Nørlund polynomial.at n=12A370417