275700

Appears in sequences

• a(n) = [x^n] G(x)^(2^(n+1))/2^n where G(x) satisfies: [x^(n+1)] G(x)^(2^n) = [x^n] G(x)^(2^n) for n>=0 and G(2x) is the g.f. of A134084.at n=5A134089
• Number of acute isosceles triangles on a centered hexagonal grid of size n.at n=12A241229